Re: [Gnuplot-info] Troublesome warning message

[<she...@be...>]

OK. It looks like Thomas Sefzick responded to an earlier post of mine
on this same topic (to which I thought I had gotten no reply). Thomas
said that the problem was with my data file and in particular with strings
that appear periodically. See Thomas' remark at:

  http://permalink.gmane.org/gmane.comp.graphics.gnuplot.user/5474

Don't know how I missed this.

Thanks Thomas



> Hi folks
>
> I have written a gnuplot script (which appears below) that reads and plots
> image data from an ascii file. The file contains multiple 2D images and
> the
> script advances through the images depending upon whether an up or down
> arrow key is pressed. Presently the script displays the images correctly
> when the arrow keys are pressed but the script generates the following
> warning repeatedly:
>
>    warning: matrix contains missing or undefined values
>
> This warning message appears to be slowing the display of the images
> upon making the button press.
>
> Does anybody have an idea why this warning is appearing?
>
>
> reset
> unset key
> unset colorbox
> unset border
> unset xtics
> unset ytics
> unset ztics
> set palette gray
>
> set multiplot
> i = 0
> set size .25,1
> set origin 0,0
> set xrange [0:5]
> set yrange [0:25]
> plot 't_space.dat' index i using 1:2:3 with labels left
> set autoscale
> set size square 1
> set origin .10, 0
> plot 't_space.dat' index i+1 matrix with image
> unset multiplot
>
>
> # Advance or decrement the slice depending upon key press.
>
> bind "Up" "i=i+2;              \
>            reset;              \
>            unset key;          \
>            unset colorbox;     \
>            unset border;       \
>            unset xtics;        \
>            unset ytics;        \
>            unset ztics;        \
>            set palette gray;   \
>            set multiplot;      \
>            set size .25,1;     \
>            set origin 0,0;     \
>            set xrange [0:5];   \
>            set yrange [0:25];  \
>            plot 't_space.dat' index i using 1:2:3 with labels left; \
>            set autoscale;      \
>            set size square 1;  \
>            set origin .10, 0;  \
>            plot 't_space.dat' index i+1 matrix with image; \
>            unset multiplot;"
>
>
> bind "Down" "i=i-2; \
>              reset; \
>              unset key; \
>              unset colorbox; \
>              unset border; \
>              unset xtics; \
>              unset ytics; \
>              unset ztics; \
>              set palette gray; \
>              set multiplot; \
>              set size .25,1; \
>              set origin 0,0; \
>              set xrange [0:5]; \
>              set yrange [0:25]; \
>              plot 't_space.dat' index i using 1:2:3 with labels left; \
>              set autoscale; \
>              set size square 1; \
>              set origin .10, 0; \
>              plot 't_space.dat' index i+1 matrix with image; \
>              unset multiplot;"
>
>
>
>
>
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