easygrid - Revision history

Robertson: Text replacement - "ocean.in" to "roms.in"

2019-07-17T15:13:42Z

Text replacement - "ocean.in" to "roms.in"

Robertson at 14:08, 7 August 2017

2017-08-07T14:08:23Z

Robertson at 14:20, 29 April 2008

2008-04-29T14:20:27Z

Show changes

Diego at 00:12, 28 April 2008

2008-04-28T00:12:57Z

← Older revision		Revision as of 00:12, 28 April 2008
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	<div class="title">EASYGRID</div>		<div class="title">EASYGRID</div>
	~~<br>~~
	<br>		<br>
	EASYGRID is a simple matlab script to make ROMS grids and initialization files. It is an austere grid-making alternative designed as a beginner's tool, yet capable of making grids for realistic applications. Since most of EASYGRID is in one file (<span class="red">easygrid.m</span>), it is easier to follow and understand the steps required to generate a simple grid (i.e. useful as a learning or teaching tool) and also reduces the required steps to get the software up and running (i.e. downloading and compiling dependencies).		EASYGRID is a simple matlab script to make ROMS grids and initialization files. It is an austere grid-making alternative designed as a beginner's tool, yet capable of making grids for realistic applications. Since most of EASYGRID is in one file (<span class="red">easygrid.m</span>), it is easier to follow and understand the steps required to generate a simple grid (i.e. useful as a learning or teaching tool) and also reduces the required steps to get the software up and running (i.e. downloading and compiling dependencies).

Diego at 20:01, 27 April 2008

2008-04-27T20:01:31Z

← Older revision		Revision as of 20:01, 27 April 2008
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	{\|style="width:100%; font-size:92%;" cellpadding="3"		{\|style="width:100%; font-size:92%;" cellpadding="3"
	\|-		\|-
	\|style="width:25%; background:Honeydew; border:1px solid YellowGreen;" valign="top"\|<span class="green">QUICK LINKS:</span><br>[http://easygrid4roms.googlecode.com Hosting page at Google-Code]<br>Discussion Forum ~~(link soon)~~		\|style="width:25%; background:Honeydew; border:1px solid YellowGreen;" valign="top"\|<span class="green">QUICK LINKS:</span><br>[http://easygrid4roms.googlecode.com Hosting page at Google-Code]<br>[https://www.myroms.org/forum/viewtopic.php?p=3043#3043 Discussion Forum]
	\|style="width:2%; background:transparent;"\|		\|style="width:2%; background:transparent;"\|
	\|style="width:25%; background:LightCyan; border:1px solid Blue;" valign="top"\|<span class="blue">NEWS:</span><br>24 April 2008: Version 0 is out		\|style="width:25%; background:LightCyan; border:1px solid Blue;" valign="top"\|<span class="blue">NEWS:</span><br>24 April 2008: Version 0 is out
	\|style="width:2%; background:transparent;"\|		\|style="width:2%; background:transparent;"\|
	\|style="width:46%; background:LightYellow; border:1px solid red;" valign="top"\| {{warning}} <span class="red">WARNING:</span><br>EASYGRID v0 is in BETA stage and could have problems. Report HERE ~~(link soon)~~ not only bugs, but <span class="red">also report successful use</span>. Once the bug:success ratio decreases... I will remove this sign.		\|style="width:46%; background:LightYellow; border:1px solid red;" valign="top"\| {{warning}} <span class="red">WARNING:</span><br>EASYGRID v0 is in BETA stage and could have problems. Report [https://www.myroms.org/forum/viewtopic.php?p=3043#3043 HERE] not only bugs, but <span class="red">also report successful use</span>. Once the bug:success ratio decreases... I will remove this sign.
	\|}		\|}

Diego at 19:16, 27 April 2008

2008-04-27T19:16:05Z

← Older revision		Revision as of 19:16, 27 April 2008
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	<div class="title">EASYGRID</div>		<div class="title">EASYGRID</div>
			<br>
	~~{\| style="width:98%; background:yellow; margin-top:10px; border:1px solid red;" cellpadding="5" cellspacing="0"~~		<br>
	\|-
	~~\|{{warning}} '''This WikiROMS article is currently under HEAVY construction. This message will be erased when active construction is finished (in 1 or 2 days).'''~~<br> <~~small~~>~~April 24, 2008 </small>~~
	\|}

	EASYGRID is a simple matlab script to make ROMS grids and initialization files. It is an austere grid-making alternative designed as a beginner's tool, yet capable of making grids for realistic applications. Since most of EASYGRID is in one file (<span class="red">easygrid.m</span>), it is easier to follow and understand the steps required to generate a simple grid (i.e. useful as a learning or teaching tool) and also reduces the required steps to get the software up and running (i.e. downloading and compiling dependencies).		EASYGRID is a simple matlab script to make ROMS grids and initialization files. It is an austere grid-making alternative designed as a beginner's tool, yet capable of making grids for realistic applications. Since most of EASYGRID is in one file (<span class="red">easygrid.m</span>), it is easier to follow and understand the steps required to generate a simple grid (i.e. useful as a learning or teaching tool) and also reduces the required steps to get the software up and running (i.e. downloading and compiling dependencies).

Diego: /* Geographical/Grid parameters */

2008-04-27T18:47:50Z

Geographical/Grid parameters

← Older revision		Revision as of 18:47, 27 April 2008
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	===Geographical/Grid parameters===		===Geographical/Grid parameters===
	After you got the bathymetry and coastline of your study region, now it is time to place a grid on it... In the <span class="green">USER SETTINGS</span> section, you have to specify <span class="red">lat</span>, <span class="red">lon</span>, <span class="red">X</span>, <span class="red">Y</span> and <span class="red">rotangle</span>. This is done in an iterative manner, where first you input your best-guesses, then you plot the grid. From the plot you can adjust your geographical/grid parameters... plot... adjust... plot... adjust... and so on.		After you got the bathymetry and coastline of your study region, now it is time to place a grid on it... In the <span class="green">USER SETTINGS</span> section, you have to specify <span class="red">lat</span>, <span class="red">lon</span>, <span class="red">X</span>, <span class="red">Y</span> and <span class="red">rotangle</span>. This is done in an iterative manner, where first you input your best-guesses, then you run EASYGRID to plot the grid. From the plot you can adjust your geographical/grid parameters... plot... adjust... plot... adjust... and so on.

	{{note}} '''You may want to turn off some switches (see below) to speed up the plotting process.'''		{{note}} '''You may want to turn off some switches (see below) to speed up the plotting process.'''

Diego: /* Setting up USER SETTINGS */

2008-04-27T18:45:47Z

Setting up USER SETTINGS

← Older revision		Revision as of 18:45, 27 April 2008
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	===Setting up USER SETTINGS===		===Setting up USER SETTINGS===
	~~The first thing to do is to edit~~ EASYGRID's <font color="green">USER SETTINGS</font>. To make things easier for you, there are detailed instructions and explanations beside each variable entry line in the <font color="green">USER SETTINGS</font>. In fact, most of the "user-manual" for EASYGRID is included within itself. Therefore I will simply copy-paste below a snippet from EASYGRID's code that contains the USER SETTINGS/instructions section.		EASYGRID's <font color="green">USER SETTINGS</font> section is where you can change the parameters needed to create your grid and initialization files. To make things easier for you, there are detailed instructions and explanations beside each variable entry line in the <font color="green">USER SETTINGS</font>. In fact, most of the "user-manual" for EASYGRID is included within itself. Therefore I will simply copy-paste below a snippet from EASYGRID's code that contains the USER SETTINGS/instructions section.

	{{note}} '''NOTE:''' The default settings in EASYGRID are for the [[FJORD_TIDAL_CASE\|Fjord tidal case]], hence you can just run EASYGRID (using the included <span class="red">Fjord_bathy.mat</span> and <span class="red">Fjord_coast.mat</span> files) to generate the grid and initial-conditions files required for the [[FJORD_TIDAL_CASE\|Fjord tidal case]] tutorial.		{{note}} '''NOTE:''' The default settings in EASYGRID are for the [[FJORD_TIDAL_CASE\|Fjord tidal case]], hence you can just run EASYGRID (using the included <span class="red">Fjord_bathy.mat</span> and <span class="red">Fjord_coast.mat</span> files) to generate the grid and initial-conditions files required for the [[FJORD_TIDAL_CASE\|Fjord tidal case]] tutorial.

Diego: /* Saving GRID as .nc file */

2008-04-25T18:17:59Z

Saving GRID as .nc file

← Older revision		Revision as of 18:17, 25 April 2008
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	<br>		<br>

	===Saving GRID as .nc file===		===Saving GRID to .nc file===
	Once you got your grid in place, your bathymetry smoothed and your land/sea masks edited... it is time to save your grid in a NetCDF file, which is what ROMS reads. To do this, simply '''TURN ON''' <span class="red">save_grid</span> and re-run EASYGRID.<br><br>		Once you got your grid in place, your bathymetry smoothed and your land/sea masks edited... it is time to save your grid in a NetCDF file, which is what ROMS reads. To do this, simply '''TURN ON''' <span class="red">save_grid</span> and re-run EASYGRID.<br><br>
	{{warning}} <span class="red">WARNING:</span> You may want to make sure <span class="red">create_grid</span>, <span class="red">edit_mask</span> and <span class="red">smooth_grid</span> are '''turned OFF''' since this may ERASE or alter your previous mask-editing or your bathymetry. On the other hand, you may want to make sure <span class="red">screen_output</span> is turned ON so that EASYGRID outputs some parameters to screen (Lm, MM, N and DT), which your should write down, since you will need to enter them in the <span class="red">ocean.in</span> file prior to running ROMS.		{{warning}} <span class="red">WARNING:</span> You may want to make sure <span class="red">create_grid</span>, <span class="red">edit_mask</span> and <span class="red">smooth_grid</span> are '''turned OFF''' since this may ERASE or alter your previous mask-editing or your bathymetry. On the other hand, you may want to make sure <span class="red">screen_output</span> is turned ON so that EASYGRID outputs some parameters to screen (Lm, MM, N and DT), which your should write down, since you will need to enter them in the <span class="red">ocean.in</span> file prior to running ROMS.

Diego: /* Saving GRID as .nc file */

2008-04-25T17:58:15Z

Saving GRID as .nc file

← Older revision		Revision as of 17:58, 25 April 2008
Line 332:		Line 332:

	===Saving GRID as .nc file===		===Saving GRID as .nc file===
	Once you got your grid in place, your bathymetry smoothed and your land/sea masks edited... it is time to save your grid in a NetCDF file, which is what ROMS reads. To do this, simply ~~turn~~ ON <span class="red">save_grid</span>.<br><br>		Once you got your grid in place, your bathymetry smoothed and your land/sea masks edited... it is time to save your grid in a NetCDF file, which is what ROMS reads. To do this, simply '''TURN ON''' <span class="red">save_grid</span> and re-run EASYGRID.<br><br>
	{{warning}} <span class="red">WARNING:</span> You may want to make sure <span class="red">create_grid</span>, <span class="red">edit_mask</span> and <span class="red">smooth_grid</span> are '''turned OFF''' since this may ERASE or alter your previous mask-editing or your bathymetry. On the other hand, you may want to make sure <span class="red">screen_output</span> is turned ON so that EASYGRID outputs some parameters to screen (Lm, MM, N and DT), which your should write down, since you will need to enter them in the <span class="red">ocean.in</span> file prior to running ROMS.		{{warning}} <span class="red">WARNING:</span> You may want to make sure <span class="red">create_grid</span>, <span class="red">edit_mask</span> and <span class="red">smooth_grid</span> are '''turned OFF''' since this may ERASE or alter your previous mask-editing or your bathymetry. On the other hand, you may want to make sure <span class="red">screen_output</span> is turned ON so that EASYGRID outputs some parameters to screen (Lm, MM, N and DT), which your should write down, since you will need to enter them in the <span class="red">ocean.in</span> file prior to running ROMS.
	<br>		<br>

← Older revision		Revision as of 20:01, 27 April 2008
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	{\|style="width:100%; font-size:92%;" cellpadding="3"		{\|style="width:100%; font-size:92%;" cellpadding="3"
	\|-		\|-
	\|style="width:25%; background:Honeydew; border:1px solid YellowGreen;" valign="top"\|<span class="green">QUICK LINKS:</span><br>[http://easygrid4roms.googlecode.com Hosting page at Google-Code]<br>Discussion Forum ~~(link soon)~~		\|style="width:25%; background:Honeydew; border:1px solid YellowGreen;" valign="top"\|<span class="green">QUICK LINKS:</span><br>[http://easygrid4roms.googlecode.com Hosting page at Google-Code]<br>[https://www.myroms.org/forum/viewtopic.php?p=3043#3043 Discussion Forum]
	\|style="width:2%; background:transparent;"\|		\|style="width:2%; background:transparent;"\|
	\|style="width:25%; background:LightCyan; border:1px solid Blue;" valign="top"\|<span class="blue">NEWS:</span><br>24 April 2008: Version 0 is out		\|style="width:25%; background:LightCyan; border:1px solid Blue;" valign="top"\|<span class="blue">NEWS:</span><br>24 April 2008: Version 0 is out
	\|style="width:2%; background:transparent;"\|		\|style="width:2%; background:transparent;"\|
	\|style="width:46%; background:LightYellow; border:1px solid red;" valign="top"\| {{warning}} <span class="red">WARNING:</span><br>EASYGRID v0 is in BETA stage and could have problems. Report HERE ~~(link soon)~~ not only bugs, but <span class="red">also report successful use</span>. Once the bug:success ratio decreases... I will remove this sign.		\|style="width:46%; background:LightYellow; border:1px solid red;" valign="top"\| {{warning}} <span class="red">WARNING:</span><br>EASYGRID v0 is in BETA stage and could have problems. Report [https://www.myroms.org/forum/viewtopic.php?p=3043#3043 HERE] not only bugs, but <span class="red">also report successful use</span>. Once the bug:success ratio decreases... I will remove this sign.
	\|}		\|}

← Older revision		Revision as of 15:13, 17 July 2019
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	<span class="black">edit_mask = 0;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into		<span class="black">edit_mask = 0;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into
	% land-pixels and vice-versa		% land-pixels and vice-versa
	<span class="black">screen_output = 1;</span> % Displays (on screen) many parameters that need to be copy-pasted in the ~~ocean~~.in file		<span class="black">screen_output = 1;</span> % Displays (on screen) many parameters that need to be copy-pasted in the roms.in file
	<span class="black">save_grid = 1;</span> % Save GRID in a NetCDF file		<span class="black">save_grid = 1;</span> % Save GRID in a NetCDF file
	<span class="black">save_init = 1;</span> % Create (and save) INITIAL CONDITIONS (from grid)</span>		<span class="black">save_init = 1;</span> % Create (and save) INITIAL CONDITIONS (from grid)</span>
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	<span class="black">edit_mask = 0;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into		<span class="black">edit_mask = 0;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into
	% land-pixels and vice-versa		% land-pixels and vice-versa
	<span class="black">screen_output = 1;</span> % Displays (on screen) many parameters that need to be copy-pasted in the ~~ocean~~.in file		<span class="black">screen_output = 1;</span> % Displays (on screen) many parameters that need to be copy-pasted in the roms.in file
	<span class="black">save_grid = 1;</span> % Save GRID in a NetCDF file		<span class="black">save_grid = 1;</span> % Save GRID in a NetCDF file
	<span class="black">save_init = 1;</span> % Create (and save) INITIAL CONDITIONS (from grid)		<span class="black">save_init = 1;</span> % Create (and save) INITIAL CONDITIONS (from grid)
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	<span class="black">edit_mask = 0;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into		<span class="black">edit_mask = 0;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into
	% land-pixels and vice-versa		% land-pixels and vice-versa
	<span class="black">screen_output = 0;</span> % Displays (on screen) many parameters that need to be copy-pasted in the ~~ocean~~.in file		<span class="black">screen_output = 0;</span> % Displays (on screen) many parameters that need to be copy-pasted in the roms.in file
	<span class="black">save_grid = 0;</span> % Save GRID in a NetCDF file		<span class="black">save_grid = 0;</span> % Save GRID in a NetCDF file
	<span class="black">save_init = 0;</span> % Create (and save) INITIAL CONDITIONS (from grid)</span>		<span class="black">save_init = 0;</span> % Create (and save) INITIAL CONDITIONS (from grid)</span>
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	<span class="black">edit_mask = <span class="red">1</span>;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into		<span class="black">edit_mask = <span class="red">1</span>;</span> % Edit rho-mask using interactive plot. Use this to manually change sea-pixels into
	% land-pixels and vice-versa		% land-pixels and vice-versa
	<span class="black">screen_output = 0;</span> % Displays (on screen) many parameters that need to be copy-pasted in the ~~ocean~~.in file		<span class="black">screen_output = 0;</span> % Displays (on screen) many parameters that need to be copy-pasted in the roms.in file
	<span class="black">save_grid = 0;</span> % Save GRID in a NetCDF file		<span class="black">save_grid = 0;</span> % Save GRID in a NetCDF file
	<span class="black">save_init = 0;</span> % Create (and save) INITIAL CONDITIONS (from grid)</span>		<span class="black">save_init = 0;</span> % Create (and save) INITIAL CONDITIONS (from grid)</span>
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	===Parameter output on screen===		===Parameter output on screen===
	If <span class="red">screen_output</span> is turned ON (in the <span class="green">USER SETTINGS</span> section), EASYGRID will output some parameters to screen. Make sure you write this numbers (Lm, MM, N and DT) since you will need to enter them in the <span class="red">~~ocean~~.in</span> file prior to running ROMS.		If <span class="red">screen_output</span> is turned ON (in the <span class="green">USER SETTINGS</span> section), EASYGRID will output some parameters to screen. Make sure you write this numbers (Lm, MM, N and DT) since you will need to enter them in the <span class="red">roms.in</span> file prior to running ROMS.
	\| COPY-PASTE the following parameters into your ~~ocean~~.in file		\| COPY-PASTE the following parameters into your roms.in file
	\| ----------------------------------------------------------------------------------------------		\| ----------------------------------------------------------------------------------------------
	\|		\|
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	\|		\|
	\|		\|
	\| Make sure the Baroclinic time-step (DT) in your ~~ocean~~.in file is less than: 11.2939 seconds		\| Make sure the Baroclinic time-step (DT) in your roms.in file is less than: 11.2939 seconds
	\| ----------------------------------------------------------------------------------------------		\| ----------------------------------------------------------------------------------------------
	*The parameters <span class="red">Lm</span>, <span class="red">Mm</span> and <span class="red">N</span> are the basically the dimensions of the RHO-grid.		*The parameters <span class="red">Lm</span>, <span class="red">Mm</span> and <span class="red">N</span> are the basically the dimensions of the RHO-grid.
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	===Saving GRID to .nc file===		===Saving GRID to .nc file===
	Once you got your grid in place, your bathymetry smoothed and your land/sea masks edited... it is time to save your grid in a NetCDF file, which is what ROMS reads. To do this, simply '''TURN ON''' <span class="red">save_grid</span> and re-run EASYGRID.<br><br>		Once you got your grid in place, your bathymetry smoothed and your land/sea masks edited... it is time to save your grid in a NetCDF file, which is what ROMS reads. To do this, simply '''TURN ON''' <span class="red">save_grid</span> and re-run EASYGRID.<br><br>
	{{warning}} <span class="red">WARNING:</span> You may want to make sure <span class="red">create_grid</span>, <span class="red">edit_mask</span> and <span class="red">smooth_grid</span> are '''turned OFF''' since this may ERASE or alter your previous mask-editing or your bathymetry. On the other hand, you may want to make sure <span class="red">screen_output</span> is turned ON so that EASYGRID outputs some parameters to screen (Lm, MM, N and DT), which your should write down, since you will need to enter them in the <span class="red">~~ocean~~.in</span> file prior to running ROMS.		{{warning}} <span class="red">WARNING:</span> You may want to make sure <span class="red">create_grid</span>, <span class="red">edit_mask</span> and <span class="red">smooth_grid</span> are '''turned OFF''' since this may ERASE or alter your previous mask-editing or your bathymetry. On the other hand, you may want to make sure <span class="red">screen_output</span> is turned ON so that EASYGRID outputs some parameters to screen (Lm, MM, N and DT), which your should write down, since you will need to enter them in the <span class="red">roms.in</span> file prior to running ROMS.
	<br>		<br>
	<br>		<br>

← Older revision		Revision as of 14:08, 7 August 2017
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	{\|style="width:100%; font-size:92%;" cellpadding="3"		{\|style="width:100%; font-size:92%;" cellpadding="3"
	\|-		\|-
	\|style="width:25%; background:Honeydew; border:1px solid YellowGreen;" valign="top"\|<span class="green">QUICK LINKS:</span><br>[~~http~~://~~easygrid4roms~~.~~googlecode~~.com Hosting page at Google-Code]<br>[https://www.myroms.org/forum/viewtopic.php?p=3043#3043 Discussion Forum]		\|style="width:25%; background:Honeydew; border:1px solid YellowGreen;" valign="top"\|<span class="green">QUICK LINKS:</span><br>[https://code.google.com/archive/p/easygrid4roms/ Hosting page at Google-Code]<br>[https://www.myroms.org/forum/viewtopic.php?p=3043#3043 Discussion Forum]
	\|style="width:2%; background:transparent;"\|		\|style="width:2%; background:transparent;"\|
	\|style="width:25%; background:LightCyan; border:1px solid Blue;" valign="top"\|<span class="blue">NEWS:</span><br>24 April 2008: Version 0 is out		\|style="width:25%; background:LightCyan; border:1px solid Blue;" valign="top"\|<span class="blue">NEWS:</span><br>24 April 2008: Version 0 is out
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	==Download EASYGRID==		==Download EASYGRID==
	*[~~http~~://~~easygrid4roms~~.~~googlecode~~.com/~~files~~/EASYGRID_v0.rar '''Download EASYGRID''']<small> (This download also includes the bathymetry and coastline files required for this tutorial)</small>		*[https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/easygrid4roms/EASYGRID_v0.rar '''Download EASYGRID''']<small> (This download also includes the bathymetry and coastline files required for this tutorial)</small>
	*Extract (i.e. unzip or unpack) the file in a location where it can stay indefinitely.		*Extract (i.e. unzip or unpack) the file in a location where it can stay indefinitely.
	*Add the location where you placed EASYGRID to your Matlab search path <small>(see [[MEXNC#How to install MEXNC?\|#5]] as an example).</small>		*Add the location where you placed EASYGRID to your Matlab search path <small>(see [[MEXNC#How to install MEXNC?\|#5]] as an example).</small>
	*<span class="red">Dependencies:</span> EASYGRID uses [http://mexcdf.sourceforge.net/downloads/ MEXNC, SNCTOOLS] and [http://www.myroms.org/index.php?page=Processing ROMS Matlab tool-kit] (only a few scripts like ~~spheric_dist~~.m , smth_bath.m , pcolorjw.m).		*<span class="red">Dependencies:</span> EASYGRID uses [http://mexcdf.sourceforge.net/downloads/ MEXNC, SNCTOOLS] and [http://www.myroms.org/index.php?page=Processing ROMS Matlab tool-kit] (only a few scripts like spheriq_dist.m , smth_bath.m , pcolorjw.m).
	:{{note}} For a '''tutorial''' on how to download/install these dependencies, [[MEXNC\|CLICK HERE]].		:{{note}} For a '''tutorial''' on how to download/install these dependencies, [[MEXNC\|CLICK HERE]].
	<br>		<br>
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	For this tutorial, you will need <span class="red">Fjord_bathy.mat</span> . You probably already have this file since it is included in [~~http~~://~~easygrid4roms~~.~~googlecode~~.com/~~files~~/~~EASYGRID_v1~~.rar EASYGRID_v0.rar] (file from the [[#Download EASYGRID\|"Download"]] section). I created <span class="red">Fjord_bathy.mat</span> by merging two bathymetry files... one high-resolution digitized from a chart and another coarser-resolution using <span class="red">read_srtm30plus.m</span> (see Figure).		For this tutorial, you will need <span class="red">Fjord_bathy.mat</span>. You probably already have this file since it is included in [https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/easygrid4roms/EASYGRID_v0.rar EASYGRID_v0.rar] (file from the [[#Download EASYGRID\|"Download"]] section). I created <span class="red">Fjord_bathy.mat</span> by merging two bathymetry files... one high-resolution digitized from a chart and another coarser-resolution using <span class="red">read_srtm30plus.m</span> (see Figure).

	<div style="clear: both;"></div>		<div style="clear: both;"></div>
Line 55:		Line 55:
	ylabel(<span class="purple">'Latitude'</span>);		ylabel(<span class="purple">'Latitude'</span>);
	axis <span class="purple">square</span>;		axis <span class="purple">square</span>;
	~~<br>~~
	~~<br>~~


	==Getting coastline==		==Getting coastline==
	In EASYGRID, the coastline is only used for plotting and it therefore not indispensable. However, it is handy to have a coastline for reference, especially when editing the land/sea mask. For EASYGRID, the coastline should be 2 vectors named "lat" and "lon" (both in units of [http://en.wikipedia.org/wiki/Decimal_degrees decimal degrees]) contained in a .mat file.		In EASYGRID, the coastline is only used for plotting and is therefore not indispensable. However, it is handy to have a coastline for reference, especially when editing the land/sea mask. For EASYGRID, the coastline should be 2 vectors named "lat" and "lon" (both in units of [http://en.wikipedia.org/wiki/Decimal_degrees decimal degrees]) contained in a .mat file.


	[[image:Fjord_coast.jpg\|left\|350px\|]]		[[image:Fjord_coast.jpg\|left\|350px\|]]

	~~An easy~~ way to get coastline data is at ~~NOAA's~~ [http://~~rimmer~~.~~ngdc~~.~~noaa~~.~~gov~~/~~coast~~/ ~~Coastline Extractor~~]. ~~Remember to select '''Matlab''' as format option (not default). [[seagrid\|SEAGRID~~'s ~~WikiROMS page]] has excellent information on how to use the~~ Coastline Extractor~~, and tools to correct and manipulate coastline data~~.		One way to get coastline data is at [http://www.soest.hawaii.edu/pwessel/gshhg/ GSHHG]. NOAA's Coastline Extractor is no longer available.



	For this tutorial, you will need <span class="red">Fjord_coast.mat</span> . You probably already have this file since it is included in [~~http~~://~~easygrid4roms~~.~~googlecode~~.com/~~files~~/~~EASYGRID_v1~~.rar EASYGRID_v0.rar] (file from the [[#Download EASYGRID\|"Download"]] section). I created <span class="red">Fjord_coast.mat</span> from the digitized chart I ~~use~~ to make the bathymetry file (see Figure).		For this tutorial, you will need <span class="red">Fjord_coast.mat</span>. You probably already have this file since it is included in [https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/easygrid4roms/EASYGRID_v0.rar EASYGRID_v0.rar] (file from the [[#Download EASYGRID\|"Download"]] section). I created <span class="red">Fjord_coast.mat</span> from the digitized chart I used to make the bathymetry file (see Figure).

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