Hi all,
I am sending attached the x00f.f90 program with a few changes that, I
hope, will make clear my questions. I expect that the list server
allow attachments.
It is my first message to this list, so if I violate any rule,
please, educate me. I hope no LART will be necessary though.
I started the use of Plplot a couple of weeks ago. I had a number of
programs around without use. Those used the ancient "Calcomp" call to
plot (plots, plot, dasher,...) and decide to use some of them as a
test.
========================8<--------- Environment -----------------
I am using a [Xu|U]buntu 14.04 64 bits, Plplot 5.10.0, Gfortran
4.8.4. The driver I am using is 'PLPLOT_DEV=wxwidgets'.
========================8<--------- Why Y inverted -----------------
I am a geophysicist and work with seismic data. What is this? Does
not matter. The point is that the informations I want to plot
represents something down into the Earth. For this reason we use ours
graphics with the X axis (including labels and ticks) on top (surface)
and the Y axis growing down (depth or wave travel time).
The attached code is the x00f.f90 program with few changes to try to
get the feel of the library.
==========================8<-------- Question 1 -----------------
As it can be seem, the call of 'plenv' exchanging xmin and xmax do
the trick of inverting the Y axis, as I expected, except that the X
axis+labels keeps being plotted at the bottom of the graph. That
seems to be a proof that the universe has no commitment with my
thoughts. :( The question: Is there some really simple approach to
change this, or will I need to make a number of calls to plot it "by
hand"? By the way, I am reading the history of the Plplot-General
(I'm at Dec 2010) and so far didn't found an answer to this.
==========================8<-------- Question 2 -----------------
Another change to the code is some calls to 'plspal0'. What I
understand is that if the call happens before 'plinit' the desired
palette becomes active. The extent I have tried if I call the routine
after 'plinit' the result seems to me to be unpredictable. The
example x16f.f90 calls it many times, ever followed by a call to
'pladv'. I tried that but does worked. What should be the call
sequence to change the color map 0?
==========================8<-------- Question 3 -----------------
This one is just to confirm if I understood correctly. Everytime a
plot is finished (whatever it means) the program holds and wait for an
interaction, usually the mouse button 3 (rightmost) releases the code
to go on. While waiting one can resize and do some other stuffs
depending on the driver used to plot. If I use 'plspause(.FALSE.)'
the program will not hold, with the price of no interaction with the
graphic. Is it correct?
==========================8<-------- Question 4 -----------------
If I understood correctly, the end of page is reached when the
program reach a 'pleop', a new 'plenv', or some others calls. What are
the calls that trigs the EOP?
I think there is too many questions for a single message already.
Sorry for that.
Best regards.
Roxo
--
---------------- Non luctari, ludare -------------------+ WYSIWYG
Fernando M. Roxo da Motta <r...@roxo.org> | Editor?
Except where explicitly stated I speak on my own behalf.| VI !!
( Registered Linux user #39505 ) | I see text,
------------ Quis custodiet ipsos custodes?-------------+ I get text!
x00f.f90.gz
Description: application/gzip
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