Pixelated, Regional Topograpy Data

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Hello,

New user of GMT here, and I'm attempting to create a map of Costa Rica and
overlay coastlines and earthquake locations.  Here is my Script:

#!/bin/bash

clear

xyz2grd COSTARIC-6565.xyz -Gcostarica.grd -R-87/-84/9/11 -I2m -V

grdimage costarica.grd -JM12 -K -Cmy-topo.cpt -R-87/-84/9/11 >> map.ps

pscoast -V -O -K -JM -R -W1 >> mappy.ps

psxy loc.txt -JM12 -R-87/-84/9/11 -Sc.1 -G'45/59/100' -B1/1 -O >> map.ps

gv map.ps


I am using a generic color palette which I can change easily, but the
coastlines are extremely low quality, and the topography is extremely
pixelated.

I look at images in papers, and there's extremely high quality topographic
images of COsta Rica, for example, as well as the coastlines and
bathymetry, but I have no idea where I can get this high-quality data.  I
have tried to get ETOPO data, but I cannot seem to find where to get
high-quality data.

So I guess my question is, is ETOPO1 the best place to get high-quality
topo data, because I cannot seem to figure out how to download data from
their website.  Also, would I need to download coastline data, as well?


Thanks,

Greg

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<div dir=3D"ltr">Hello,<div><br></div><div>New user of GMT here, and I&#39;=
m attempting to create a map of Costa Rica and overlay coastlines and earth=
quake locations. =C2=A0Here is my Script:</div><div><br></div><div>







<p class=3D"">#!/bin/bash</p>
<p class=3D"">clear<br></p>
<p class=3D"">xyz2grd COSTARIC<span class=3D"">-6565.</span>xyz -Gcostarica=
.grd -R<span class=3D"">-87</span>/<span class=3D"">-84</span>/<span class=
=3D"">9</span>/<span class=3D"">11</span> -I2m -V<br></p>
<p class=3D"">grdimage costarica.grd -JM12 -K -Cmy-topo.cpt -R<span class=
=3D"">-87</span>/<span class=3D"">-84</span>/<span class=3D"">9</span>/<spa=
n class=3D"">11</span> &gt;&gt; <a href=3D"http://map.ps">map.ps</a><br></p=
>
<p class=3D"">pscoast -V -O -K -JM -R -W1 &gt;&gt; <a href=3D"http://mappy.=
ps">mappy.ps</a><br></p>
<p class=3D"">psxy loc.txt -JM12 -R<span class=3D"">-87</span>/<span class=
=3D"">-84</span>/<span class=3D"">9</span>/<span class=3D"">11</span> -Sc<s=
pan class=3D"">.1</span> -G<span class=3D"">&#39;45/59/100&#39;</span> -B1/=
<span class=3D"">1</span> -O &gt;&gt; <a href=3D"http://map.ps">map.ps</a><=
br>
</p>
<p class=3D"">gv <a href=3D"http://map.ps">map.ps</a><br></p><p class=3D"">=
<br></p><p class=3D"">I am using a generic color palette which I can change=
 easily, but the coastlines are extremely low quality, and the topography i=
s extremely pixelated.=C2=A0</p>
<p class=3D"">I look at images in papers, and there&#39;s extremely high qu=
ality topographic images of COsta Rica, for example, as well as the coastli=
nes and bathymetry, but I have no idea where I can get this high-quality da=
ta. =C2=A0I have tried to get ETOPO data, but I cannot seem to find where t=
o get high-quality data. =C2=A0</p>
<p class=3D"">So I guess my question is, is ETOPO1 the best place to get hi=
gh-quality topo data, because I cannot seem to figure out how to download d=
ata from their website. =C2=A0Also, would I need to download coastline data=
, as well?</p>
<p class=3D""><br></p><p class=3D"">Thanks,</p><p class=3D"">Greg</p></div>=
</div>
Mailing list for GMT discussions of all kinds.  If you are not sure you have found a bug, discuss it here first.
To formally report bugs or request features, please register and add New Issue on gmt.soest.hawaii.edu
To unsubscribe, send the message &quot;signoff gmt-help&quot; to <a href=3D"mailto:[email protected]">[email protected]</a>
Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead.

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