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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">1) Who can explain the behavior of the following example (two graphs, with and without psgrid)?</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\documentclass{article}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\usepackage{pst-plot,pstricks-add}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\usepackage[left=1cm,top=1cm,right=1cm,bottom=1cm]{geometry}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;"> </font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\newrgbcolor{Lcolor181.0161}{0 0 0}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\newrgbcolor{Fcolor181.0161}{0.4 0 0}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;"> </font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\begin{document}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">Without psgrid:\\[1cm]</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">   \psset{</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     llx=-1cm,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     lly=-1cm,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     xAxisLabel={x axis},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     xAxisLabelPos={c,-0.55cm},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     yAxisLabel={y axis},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     yAxisLabelPos={-1cm,c}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">   \begin{psgraph}[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     axesstyle=frame,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     %psgrid,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     Dy=.5,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     xticksize=0 4,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     yticksize=0 7,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     ticklinestyle=dotted,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">   ](0,0)(7,4){10cm}{7cm}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     \savedata{\mydata}[{</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {0.000000,0.000000},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {0.314159,0.098696},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {0.628319,0.394784},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {0.942478,0.888264},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {1.256637,1.579137},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {1.570796,2.467401},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {1.884956,3.553058},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       {1.994391,4.000000}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     }]</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     \pscustom[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       linestyle=none,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       fillstyle=solid,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       opacity=0.25,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       fillcolor=Fcolor181.0161,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     ]{</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       \dataplot[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">         plotstyle=curve,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">         linestyle=solid,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">         linecolor=Lcolor181.0161</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       ]{\mydata}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">       \psline(1.994391,4)(6.3,4)(6.3,0)</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">     }</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">   \end{psgraph}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\\[1cm]</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">With psgrid:\\[4cm]</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\begin{psgraph}[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        axesstyle=frame,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        psgrid,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        Dy=.5,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        xticksize=0 4,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        yticksize=0 7,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        ticklinestyle=dotted,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        ](0,0)(7,4){10cm}{7cm}  </font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        \savedata{\mydata}[{</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {0.000000,0.000000},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {0.314159,0.098696},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {0.628319,0.394784},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {0.942478,0.888264},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {1.256637,1.579137},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {1.570796,2.467401},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {1.884956,3.553058},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                {1.994391,4.000000}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        }]</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        \pscustom[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        linestyle=none,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        fillstyle=solid,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        opacity=0.25,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        fillcolor=Fcolor181.0161,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        ]{</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                \dataplot[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                plotstyle=curve,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                linestyle=solid,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                linecolor=Lcolor181.0161</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                ]{\mydata}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">                \psline(1.994391,4)(6.3,4)(6.3,0)</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">        }</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\end{psgraph}</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\end{document}</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">2) I cannot find the exact syntax for the parameter gridpara. Can someone give a minimal example?</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">Poul Riis</font></div>
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