<div dir="ltr"><div dir="ltr">Hi Bernd and leledumbo,</div><div dir="ltr"><br></div><div>Thanks for your responses. For now, I have settled on GNUplot. This tool creates very nice plots and allows to export in a variety of formats (vector and raster). I have written a wrapper that creates a script as Bernd mentioned and runs the GNUplot tool from the command-line. The wrapper has a simple API that allows to toggle settings and add series as required. If interested then please let me know and I will share. In time I would like to add a native vector output to this plotting library. I had a brief look at SVG and that should be possible.</div><div><br></div><div>Kind regards, Darius</div><div dir="ltr"></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Nov 15, 2020 at 11:25 PM Bernd Oppolzer via fpc-pascal <<a href="mailto:fpc-pascal@lists.freepascal.org">fpc-pascal@lists.freepascal.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi, <br>
</p>
<p>I don't know if this can help you, but in the 1980s I worked with
a library called GKS (graphic kernel system) <br>
which I used to build such graphics like the following example: <br>
<a href="http://bernd-oppolzer.de/fdynsb.pdf" target="_blank">http://bernd-oppolzer.de/fdynsb.pdf</a></p>
<p>This programs that did this were written in Pascal at that time.
<br>
</p>
<p>It still works today for me (the customer still uses this
software), <br>
although is it C today, and GKS is not available any more. <br>
What I did: the original GKS calls are written to files (some sort
of GKS metafile, but not the <br>
original 1980s format), and then this file format is read by a C
program GOUTHPGL, <br>
which translates this (proprietary) format to HPGL. The HPGL files
are either sent to <br>
HP plotters or translated to PDF using public domain software; see
the file above. <br>
(GOUTHGPL was a Pascal program in the 1990s, too). <br>
</p>
<p>IMO, you could easily write the "GKS metafile format" with
Pascal; <br>
in fact, it is simply is a sort of logfile of the GKS calls. <br>
</p>
<p>Here is an old paper about the GKS system:
<a href="http://nsucgcourse.github.io/lectures/Lecture01/Materials/Graphical%20Kernel%20System.pdf" target="_blank">http://nsucgcourse.github.io/lectures/Lecture01/Materials/Graphical%20Kernel%20System.pdf</a></p>
<p>The translator GOUTHGPL supports only a small subset of GKS; see
again the example picture above. <br>
</p>
<p>If you are interested for more details, you could contact me
offline. <br>
</p>
<p>Kind regards</p>
<p>Bernd <br>
</p>
<p><br>
</p>
<div>Am 15.11.2020 um 09:33 schrieb Darius
Blaszyk via fpc-pascal:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Hi,</div>
<div><br>
</div>
<div>I am looking for a simple to use non-visual graphing
library to produce x-y plots in a raster file format (similar
to how pyplot works). Rather than developing something from
scratch or writing a wrapper to GNU plot (additional
dependency), I was hoping something like this already would
exist that I could build upon.</div>
<div><br>
</div>
<div>Thank you for any tips!</div>
<div><br>
</div>
<div>Rgds, Darius<br>
</div>
</div>
<br>
<fieldset></fieldset>
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