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Subject: surface charts
I have attached 3 files: a gnumeric file with a contour and a surface plot a PNG showing the contour plot a PNG showing the surface plot In all three cases the data comes from the region: A B C D R1 1 2 3 R2 1 1 2 3 R3 2 1 4 9 R4 3 1 8 9 intended as a 3 by 3 surface with the height values contained in Sheet1.$B$2:Sheet1.$D$4 Gnumeric stores the surface plot in an ODS file as <office:chart> <chart:chart svg:width="152.00pt" svg:height="101.00pt" chart:class="chart:surface" chart:style-name="plotstyle"> <chart:plot-area chart:style-name="plotarea" table:cell-range-address="Sheet1.$A$2:Sheet1.$A$4"> <chart:axis chart:dimension="z" chart:style-name="zaxis"/> <chart:axis chart:dimension="y" chart:style-name="yaxis"/> <chart:axis chart:dimension="x" chart:style-name="zaxis"/> <chart:series chart:values-cell-range-address="Sheet1.$B$2:Sheet1.$D$4" chart:style-name="series1"> <chart:domain table:cell-range-address="Sheet1.$A$2:Sheet1.$A$4"/> <chart:domain table:cell-range-address="Sheet1.$B$1:Sheet1.$D$1"/> </chart:series> <chart:wall svg:width="152.00pt" chart:style-name="wallstyle"/> </chart:plot-area> </chart:chart> </office:chart> with <style:style style:name="plotstyle" style:family="chart"> <style:chart-properties chart:auto-size="true" chart:three-dimensional="true"/> </style:style> Similarly the contour chart is <office:chart> <chart:chart svg:width="152.00pt" svg:height="86.75pt" chart:class="chart:surface" chart:style-name="plotstyle"> <chart:plot-area chart:style-name="plotarea" table:cell-range-address="Sheet1.$A$2:Sheet1.$A$4"> <chart:axis chart:dimension="y" chart:style-name="yaxis"/> <chart:axis chart:dimension="x" chart:style-name="zaxis"/> <chart:series chart:values-cell-range-address="Sheet1.$B$2:Sheet1.$D$4" chart:style-name="series1"> <chart:domain table:cell-range-address="Sheet1.$A$2:Sheet1.$A$4"/> <chart:domain table:cell-range-address="Sheet1.$B$1:Sheet1.$D$1"/> </chart:series> <chart:wall svg:width="152.00pt" chart:style-name="wallstyle"/> </chart:plot-area> </chart:chart> </office:chart> with <style:style style:name="plotstyle" style:family="chart"> <style:chart-properties chart:auto-size="true" chart:three-dimensional="false"/> </style:style> Note that this way of storing surface plots would allow a program to add several surfaces to the same plot by adding multiple series. Andreas -- Andreas J. Guelzow Concordia University College of Alberta
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