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Rev 7788 Rev 7792
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            if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
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            if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
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            break;
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            break;
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        case LEVELCURVE:
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        case LEVELCURVE:
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        /*
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        /*
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        @levelcurve color,expression in x/y,l1,l2,...
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        @levelcurve color,expression in x/y,l1,l2,...
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        @Draws (pixel) level curves for expression, with levels l1, l2,...
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        @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
-
 
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        @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
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        @every individual level curve may be set 'onclick / drag xy' <br />e.g. every single level curve (l1,l2,l3...l_n) has a unique identifier
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        @Take care : the arrays for holding the javascript data are limited in size !!
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        @note : the arrays for holding the javascript data are limited in size
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        @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
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        */
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        */
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            stroke_color = get_color(infile,0);
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            fill_color = get_color(infile,0);
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            char *fun1 = get_string_argument(infile,0);
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            char *fun1 = get_string_argument(infile,0);
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            if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
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            if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
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            i = 0;
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            i = 0;
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            done = FALSE;
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            done = FALSE;
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            while( !done ){
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            while( !done ){