Re: usage of -i option with psxy

You are off by one column.  In GMT the first column is 0. So -i0,1,5s0.025

-p

On Dec 6, 2013, at 12:45 PM, Cyril Langlois <[email protected]> wrote:

> Hello,
> 
> I’ve tried to map with GMT5.1.0 the seamounts database Global_Seamounts_JGR2001_revised.txt published by Paul Wessel in 2001, with seamount radius as symbol size.
> 
> So, using awk, I write :
> 
> awk '{if((substr($1,1,1)!="#")&&(substr($1,1,1)!=">")&&($1!=""))print($1,$2,0.0025*$6)}' Global_Seamounts_JGR2001_revised.txt  |\
> gmt psxy -R -J -Scc -Wthinner,black -Gfirebrick -O -V >> $map
> 
> It works (attached map below). 
> 
> Reading the GMT5.1.0 manual, I believed I could do the same without awk, with the psxy -i option, choosing longitude (1), latitude (2) and seamount size (6th) columns of the file and resizing seamount radius. So, I write :
> 
> gmt psxy -R -J -Scc -i1,2,6s0.025 -hi  -Wthinner,black-Gfirebrick -O -V >> $map
> 
> but it doesn’t work : data symbols are not plotted with the expected size nor at the good location.
> 
> Where am I wrong ?
> Thanks for help,
> 
> Cyril
> 
> <GMT5_Seamounts-JH.jpg>
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