DPlot

[DPlotAdmin]

Beta versions are now available:
DPlot: http://www.dplot.com/beta/dplotbeta.exe
DPlot Jr: http://www.dplot.com/beta/dplotjrbeta.exe
DPlot Viewer: http://www.dplot.com/beta/dplotvubeta.exe

Edit: Links changed to the normal release versions; all changes mentioned below are included.


Changes since 1.9.5.4 (blue text refers primarily to DPLOTLIB.DLL):

Added the ability to change the orientation of numbers along the axes to 45 degrees or vertical. See Options>Number Formats. These settings are applied to most XY plots, 2D views of 3D data, and the amplitude scale of 1D plots. Added corresponding LabelDirection macro/DDE command.

For 3D plots, made a minor change to the 3D projection that forces vertical lines to remain vertical. In previous versions vertical lines were usually drawn at a very small angle from vertical.

User-specified extents on plots of 3D points on a rectangular grid may now be used to view a subset of the data. Grid rectangles that are not completely inside those extents will not be drawn.

For logarithmic scales on XY plots you may now specify extents that are not 1, 2, or 5 times a power of 10. The actual extents will be rounded to the nearest number with 2 significant figures that includes the specified extents. Default extents are unchanged and will always be 1, 2, or 5 times a power of 10.

Added Minor tick marks options to the Log Scale Tick Labels menu command, which is a bit more important given the above change.

Symbol frequency setting on the Symbol/Line Styles dialog for XY plots is now an individual setting for each curve, rather than being applied to all curves. Changed the SymbolFrequency macro/DDE command to take this new ability into account.

Negative amplitudes are now allowed on polar plots. If all amplitudes are > 0, DPlot still forces the center of the plot to be at radius = 0, unless you change the extents with the Extents/Tick Marks/Size command.

List Peaks within a Range menu command now displays the same mean, standard deviation, and standard error report given by List Peaks.

Recent addition of specifying a fixed number of decimal places on axis labels is now applied to scientific notation and "powers of 10" number formats as well as the default number format. Both of these number formats now display more significant digits when warranted; previous versions displayed no more than 5 digits.

Added DateFormat and TimeFormat macro/DDE commands to control the display of axis labels using Calendar date, Date and time, or Time number formats.

Default plot extents and tick mark interval for Calendar date and Date and time number formats are more sensible in this version. Previous versions used the same scheme as the default number format when the plot extents were less than 1 day. This very rarely resulted in limits that were whole hours, for example.

Added Select All and Deselect All buttons to the Hide Curves dialog for XY plots.

Plot extents were not recalculated after using the Delete Points in Box menu command.

User-specified tick mark intervals were sometimes saved to DPlot files with an insufficient number of significant figures, particularly when working with a date scale with tick marks at some multiple of hours or minutes rather than days or fractions of days.

Bug fix: DPlot crashed under some circumstances when the number of tick mark intervals was set to 1.

Bug fix: ManualScale macro/DDE command did not work properly for 3D scatter plots.

Bug fix: Plot extents set with Extents/Tick Marks/Size for 3D plots were not properly restored from a DPlot file.

Amended the plugin interface to allow double-precision data on both input and output arrays. This change will not affect any old plugins, though new plugins that take advantage of this feature will require the current version of DPlot.

Added double-precision versions of DPlot_Plot, DPlot_PlotToRect, DPlot_PlotBitmap, and DPlot_AddData to DPLOTLIB.DLL. Excel Add-In now uses the double-precision version of DPlot_Plot. For many users the most obvious advantage of this change is that date/time entries can now be sent via the Excel Add-In and the precision of the time value will be preserved (down to fractional microseconds). In previous versions date/time entries had a resolution of roughly 3 minutes.

DPlot_Start function in DPLOTLIB.DLL (used by the Excel Add-In and all DPLOTLIB example programs) will now wait up to 5 seconds after successfully launching DPlot for an input idle before returning. This change was necessary for older systems, in particular those running Windows 98, but should not result in any performance penalty for other systems.

Added DPlot_GetVersion function to DPLOTLIB.DLL. This function returns the version number of DPlot (or DPlot Jr) that will be launched by DPlot_Start or any other DPLOTLIB function. The return value of the function indicates whether the full version of DPlot or DPlot Jr will be used.
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