Re: psxy and segment headers

Hi Paul, Russell,

by pure coincidence, I just wanted to plot plate boundaries using the same file myself and struggled a bit (should read my own blog I suppose)... However, the command you specify below works for me as expected on Mac OS X 10.9 using 5.1.2_r13178 [64-bit], it also did work on older version. Maybe some file encoding issues?

This feature was implemented by Paul in early Feb 2012 (going by my email), not sure which GMT version this corresponds to but I reckon it was an early GMT 5 version. So it's been around for a bit.

@Paul: related to this - why is it necessary to specify the symbol size in the call to psxy when it is specified for all segment headers? When I try to call "gmt psxy -S" on that very same file Russ is quoting, I get:

psxy: Segment header tries to switch to a line symbol like quoted line or fault - ignored

Also, it seems that there are some stray fault symbols being plotted on the left side of the map beyond the map boundaries, see attached PS/PDF file.

Command:
gmt psxy -JN180/22 -Rg PB2002_boundaries.gmt -W0.5p,red -Sf0.25/3p -Gred -Ba30 > out.ps

[GMT5 version as specified above]

Cheers,
Christian


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On 30 Jul 2014, at 1:18 am, Paul Wessel <[email protected]> wrote:

> Pretty sure this requires at least 5.1.1 or later (i.e., svn version).
> -p
> 
> On Jul 29, 2014, at 1:09 PM, Russell Cuthbertson <[email protected]> wrote:
> 
>> I'm trying to implement the mods that Christian Heine
>> (http://tectonicwaters.wordpress.com/2012/06/28/plate-boundaries-for-gmt5s-p
>> sxy/) has done to Peter Bird's tectonic plates file
>> (peterbird.name/oldFTP/PB2002/). 
>> The -Sf section headers are meant to create the various symbols for each
>> type of plate boundary. 
>> 
>> The command is meant to be:
>> psxy -J -R PB2002_boundaries.gmt -W0.5p,red -O -Sf0.25/3p -Gred
>> -Ba30:."Bird's_Plate_Boundaries" >> out.ps
>> 
>> But all I get is:
>> psxy: Warning: # not a valid number and may not be decoded properly.
>> psxy: Mismatch between actual (2) and expected (3) fields near line 22
>> 
>> Here is a snippet of the relevant bit of the file (with line numbers)
>> 18:	#
>> 19:	#
>> ----------------------------------------------------------------------------
>> #
>> 20:	> AF-AN Mueller et al. [1987]   
>> 21:	> -Sf0.45/3p
>> 22:	-0.4379 -54.8518
>> 
>> It appears to be recognising segment headers OK. gmtdefaults shows:
>> IO_SEGMENT_MARKER               = >
>> 
>> What else is it expecting?
>> 
>> I'm using 5.1.0
>> 
>> RussC
>> 
>> 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 "signoff gmt-help" to [email protected]
>> Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead.
> 
> 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 "signoff gmt-help" to [email protected]
> Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead.


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