On 2013-02-21 15:14-0800 phil rosenberg wrote:
Thanks for the report Fulvio
In that case I will download a clean version of plplot tomorrow and check how
it works with that. Unfortunately I do almost all my coding on a windows
environment - mostly because the debugging tools are so good.
Speak soon
Phil
Hi Phil:
I confirm fulvio's results on my own Debian (wheezy) system. With
Fulvio's test.c example the wxwidgets (wxGC) GUI from the first plinit
does not disappear, and the second plinit segfaults. These (bad)
results occur regardless of whether your wxwidgets patch is applied
or not.
So I suspect your wxwidgets patch (which, by the way, does apply
cleanly to the svn trunk version of PLplot) addresses part of the
issue but not all of it.
Will you try test.c yourself for testing purposes rather than your
modified x00c ? I have attached a slightly modified form of it here
(plwid ==> plwidth is required for the trunk version) for your
convenience. Note I have tried this test.c for a number of interactive
devices and the only device where there are issues appears to be
wxwidgets.
Note, I normally run the default backend=2 (wxGC) but I also just now
tried -drvopt backend=0 (basic) and got the same (bad) results with
test.c. I have not tried backend=1 (AGG) for the wxwidgets device
because the AGG library is not installed on my system.
Alan
__________________________
Alan W. Irwin
Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
__________________________
Linux-powered Science
__________________________
// $Id: x01c.c 11680 2011-03-27 17:57:51Z airwin $
//
// Simple line plot and multiple windows demo.
//
// Copyright (C) 2004 Rafael Laboissiere
//
// This file is part of PLplot.
//
// PLplot is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published
// by the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// PLplot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with PLplot; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
//
#include "plcdemos.h"
#include "plevent.h"
#ifdef PL_HAVE_UNISTD_H
# include <unistd.h>
#endif
// Variables and data arrays used by plot generators
static PLFLT x[101], y[101];
static PLFLT xscale, yscale, xoff, yoff, xs[6], ys[6];
static PLGraphicsIn gin;
static int locate_mode;
static int test_xor;
static int fontset = 1;
static char *f_name = NULL;
// Options data structure definition.
static PLOptionTable options[] = {
{
"locate", // Turns on test of API locate function
NULL,
NULL,
&locate_mode,
PL_OPT_BOOL,
"-locate",
"Turns on test of API locate function"
},
{
"xor", // Turns on test of xor function
NULL,
NULL,
&test_xor,
PL_OPT_BOOL,
"-xor",
"Turns on test of XOR"
},
{
"font", // For switching between font set 1 & 2
NULL,
NULL,
&fontset,
PL_OPT_INT,
"-font number",
"Selects stroke font set (0 or 1, def:1)"
},
{
"save", // For saving in postscript
NULL,
NULL,
&f_name,
PL_OPT_STRING,
"-save filename",
"Save plot in color postscript `file'"
},
{
NULL, // option
NULL, // handler
NULL, // client data
NULL, // address of variable to set
0, // mode flag
NULL, // short syntax
NULL
} // long syntax
};
const char *notes[] = { "Make sure you get it right!", NULL };
// Function prototypes
void plot1( int );
void plot2( void );
void plot3( void );
//--------------------------------------------------------------------------
// main
//
// Generates several simple line plots. Demonstrates:
// - subwindow capability
// - setting up the window, drawing plot, and labelling
// - changing the color
// - automatic axis rescaling to exponential notation
// - placing the axes in the middle of the box
// - gridded coordinate axes
//--------------------------------------------------------------------------
void do_it_once () {
PLINT digmax;
plstar( 2, 2 );
xscale = 6.;
yscale = 1.;
xoff = 0.;
yoff = 0.;
plot1( 0 );
xscale = 1.;
yscale = 0.0014;
yoff = 0.0185;
digmax = 5;
plsyax( digmax, 0 );
plot1( 1 );
plot2();
plot3();
plend();
}
int
main( int argc, const char *argv[] )
{
// plplot initialization
// Parse and process command line arguments
plMergeOpts( options, "x01c options", notes );
plparseopts( &argc, argv, PL_PARSE_FULL );
do_it_once();
do_it_once();
sleep(3);
printf("all fine\n");
exit( 0 );
}
//--------------------------------------------------------------------------
void
plot1( int do_test )
{
int i;
PLFLT xmin, xmax, ymin, ymax;
for ( i = 0; i < 60; i++ )
{
x[i] = xoff + xscale * ( i + 1 ) / 60.0;
y[i] = yoff + yscale * pow( x[i], 2. );
}
xmin = x[0];
xmax = x[59];
ymin = y[0];
ymax = y[59];
for ( i = 0; i < 6; i++ )
{
xs[i] = x[i * 10 + 3];
ys[i] = y[i * 10 + 3];
}
// Set up the viewport and window using PLENV. The range in X is
// 0.0 to 6.0, and the range in Y is 0.0 to 30.0. The axes are
// scaled separately (just = 0), and we just draw a labelled
// box (axis = 0).
//
plcol0( 1 );
plenv( xmin, xmax, ymin, ymax, 0, 0 );
plcol0( 2 );
pllab( "(x)", "(y)", "#frPLplot Example 1 - y=x#u2" );
// Plot the data points
plcol0( 4 );
plpoin( 6, xs, ys, 9 );
// Draw the line through the data
plcol0( 3 );
plline( 60, x, y );
// xor mode enable erasing a line/point/text by replotting it again
// it does not work in double buffering mode, however
if ( do_test && test_xor )
{
#ifdef PL_HAVE_USLEEP
PLINT st;
plxormod( 1, &st ); // enter xor mode
if ( st )
{
for ( i = 0; i < 60; i++ )
{
plpoin( 1, x + i, y + i, 9 ); // draw a point
usleep( 50000 ); // wait a little
plflush(); // force an update of the tk driver
plpoin( 1, x + i, y + i, 9 ); // erase point
}
plxormod( 0, &st ); // leave xor mode
}
#else
printf( "The -xor command line option can only be exercised if your "
"system\nhas usleep(), which does not seem to happen.\n" );
#endif
}
}
//--------------------------------------------------------------------------
void
plot2( void )
{
int i;
// Set up the viewport and window using PLENV. The range in X is -2.0 to
// 10.0, and the range in Y is -0.4 to 2.0. The axes are scaled separately
// (just = 0), and we draw a box with axes (axis = 1).
//
plcol0( 1 );
plenv( -2.0, 10.0, -0.4, 1.2, 0, 1 );
plcol0( 2 );
pllab( "(x)", "sin(x)/x", "#frPLplot Example 1 - Sinc Function" );
// Fill up the arrays
for ( i = 0; i < 100; i++ )
{
x[i] = ( i - 19.0 ) / 6.0;
y[i] = 1.0;
if ( x[i] != 0.0 )
y[i] = sin( x[i] ) / x[i];
}
// Draw the line
plcol0( 3 );
plwidth( 2. );
plline( 100, x, y );
plwidth( 1. );
}
//--------------------------------------------------------------------------
void
plot3( void )
{
PLINT space0 = 0, mark0 = 0, space1 = 1500, mark1 = 1500;
int i;
// For the final graph we wish to override the default tick intervals, and
// so do not use plenv().
//
pladv( 0 );
// Use standard viewport, and define X range from 0 to 360 degrees, Y range
// from -1.2 to 1.2.
//
plvsta();
plwind( 0.0, 360.0, -1.2, 1.2 );
// Draw a box with ticks spaced 60 degrees apart in X, and 0.2 in Y.
plcol0( 1 );
plbox( "bcnst", 60.0, 2, "bcnstv", 0.2, 2 );
// Superimpose a dashed line grid, with 1.5 mm marks and spaces.
// plstyl expects a pointer!
//
plstyl( 1, &mark1, &space1 );
plcol0( 2 );
plbox( "g", 30.0, 0, "g", 0.2, 0 );
plstyl( 0, &mark0, &space0 );
plcol0( 3 );
pllab( "Angle (degrees)", "sine", "#frPLplot Example 1 - Sine function" );
for ( i = 0; i < 101; i++ )
{
x[i] = 3.6 * i;
y[i] = sin( x[i] * M_PI / 180.0 );
}
plcol0( 4 );
plline( 101, x, y );
}
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