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#1
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contour plots
Is there an easy way to plot a 2-D contour chart? I have data that
takes x1 and x2 as input and i want to show z in contours. john |
#2
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contour plots
Try a surface chart. Two sub-types take the view from
above giving contours. See the tushar-mehta.com site. -----Original Message----- Is there an easy way to plot a 2-D contour chart? I have data that takes x1 and x2 as input and i want to show z in contours. john . |
#3
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contour plots
Is there an easy way to plot a 2-D contour chart? I have data that
takes x1 and x2 as input and i want to show z in contours. Take look at 3DField (http://3dfmaps.com) |
#4
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contour plots
John -
You need to be able to put the data into a grid, with X values down the first column and Y values across the first row. There must be exactly one Z value per grid cell. The X and Y values are treated as category labels, not numerical values. And the interpolation of the contours is imperfect. For example, you'll never get a saddle point unless there is a cell right at the saddle. Otherwise you get a rooftop-like peak connecting the two high points with a straight line, which drops off to the low points on either side. (If I need this kind of chart, I insert rows and columns between each row and column of data, and use worksheet formulas to interpolate the data, in order to improve the resolution of the chart. Data layout in case I wasn't clear (keep the top left cell blank): Y1 Y2 Y3 X1 Z11 Z12 Z13 X2 Z21 Z22 Z23 X3 Z31 Z32 Z33 - Jon ------- Jon Peltier, Microsoft Excel MVP Peltier Technical Services http://PeltierTech.com/Excel/Charts/ _______ johndickmann wrote: Is there an easy way to plot a 2-D contour chart? I have data that takes x1 and x2 as input and i want to show z in contours. john |
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