xyz scatterplot - projections

[tstrand]

I recently tried making some xyz scatter plots with a sparse number of points. I found it was difficult to visualize the 3D location of the points from a single view. I have seen such plots where the points are also projected down to the base (xy) plane, sometimes with a line connecting the point to its projection. That helps visualize the 3d location of the points. I didn't see a way of doing that in dplot. It would be nice to have to option of projecting the points onto the xy plane and/or the xz and yz planes.

I also had the following problems. First I couldn't find a way of changing the font on the z axis label. Second, I found that as I took different viewpoints, I often had the numerical values on the axes overlapping the axis label and I wasn't able to change that.

Thanks,
Tim
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[DPlotAdmin]

There are a couple of changes related to scatter plots coming in the next release:


Your droplines can be the same color as the symbol, as shown, or black. And you'll of course be able to control the line width.

The other nifty feature is the addition of a cube symbol. Unlike all others this one is 3D and respects the perspective setting.

I also had the following problems. First I couldn't find a way of changing the font on the z axis label.

That's a goof on my part - thanks for pointing out the problem. The Z axis entry isn't shown on the Fonts dialog; it will be next time. The only way to access that setting is by right-clicking near the center of the label and selecting "Font".

Second, I found that as I took different viewpoints, I often had the numerical values on the axes overlapping the axis label and I wasn't able to change that.

Unless you're using dates or dates and times, that shouldn't happen at any orientation. (If you are using dates you might consider using a different date format.) In any case I'd appreciate it if you'd save your graph as a DPlot file and send it to me. To get around the problem for now you can add a blank line (or 2 or 3) to the start of the label, which should give you more room - e.g. "\nThis is the label".

[DPlotAdmin]

Done. Update mail is being sent as I write this. If you're not on the list you can get the update with Help>Check for Updates.

Thanks for your input.