DPlot 2.2.7.5 is a Graphing Software product from dplot.com, get 5 Stars SoftSea Rating, This graphing program produces X Y plots and 2D or 3D contour plots. Multiple scaling types are supported, including linear, logarithmic, probability scales, triangle plots, polar plots, and tripartite grids. Data manipulation and analysis functions include filtering, smoothing, curve fitting and FFT. It supports plug-ins and has a programmable interface. DPlot graphs and manipulates 2D and 3D data from a variety of sources in many various formats. While designed for scientists, engineers, and other technical fields, DPlot's straightforward interface will appeal to anybody interested in creating presentation-quality X-Y plots and/or contour plots of 3D data. DPlot runs on Windows 95, 98, 2000, ME, NT, 2003, XP, and Vista.

DPlot include these features:
Multiple scaling types, including linear, logarithmic, and probability scales on the X and/or Y axes. DPlot also provides several special purpose scale types, including grain size distribution plots, tripartite grids (shock spectra), polar charts, triangle plots, N1.85 hydraulic scales, and Mercator projection.
Bar charts with a large number of presentation options.
Box-and-whisker plots and dot graphs for one or more groups of 1D data.
Generate curves from equations
Multiple independent or dependent scales.

Easily create blank graph paper. Several examples are shown on the Graph Paper page.

Error bars with magnitudes set to a constant value, to a percentage of the amplitudes, or independently.
Bubble plots with symbol sizes proportional to a third dimension.
Vector plots with vector lengths and colors proportional to a third dimension and angles from a fourth dimension.
Fill between 2 curves, fill the area formed by closing a curve, or fill from a curve to a specified Y value. Choose from seven pre-defined fill patterns or create a custom pattern.
Contour plots of 3D data, shown as contour lines in a plan view of the XY plane or as shaded bands in a 3D projection, optionally with light source shading. DPlot accepts both randomly-spaced 3D points and points on a rectangular grid. For rectangular grids only, DPlot can also produce a waterfall plot and a simple wireframe mesh.
3D scatter plots, with up to 100 data sets and colors based on Z value or data set.
Choose from 40 symbol styles and/or 7 line styles for your XY plots. You have full control over symbol size, line weight, and color. In addition to the 40 built-in graphic symbols you can use any character from any of the Wingdings fonts included with Windows.
Choose from a variety of number formats for each axis. Date and time formats are customizable.

Bitmap export
Bitmap export, RLE compressed, 77Kb
. Choose from 8- or 24-bit color depth, and optionally choose run-length encoding for 8-bit files. Though RLE-encoding of bitmaps is not often used, it is supported by most popular graphics applications and results in a significantly smaller file for typical DPlot graphs. By way of example, the size of the linked picture is 77Kb with RLE compression, or 431Kb uncompressed, or 1285Kb if you used copy/paste of the same image with a 24- or 32-bit display.

JPEG image export
JPEG image export, 96Kb
. The plugin automatically selects "good" quality, which is about the minimum acceptable quality that doesn't produce too many unsightly artifacts. The same picture saved as an RLE bitmap is stored to a 96Kb JPEG file. For a better quality plot in a smaller file, we highly recommend PNG.

Portable Network Graphics (PNG) image export
Portable Network Graphics (PNG) image export, 28Kb
. Unlike JPEG, PNG compression is lossless. And unlike GIF, 24- or 32-bit images can be saved. Compression of DPlot plots is generally superior to the poorest quality JPEG files and is generally comparable to GIF. By way of comparison, the BMP example mentioned above is saved to a 28Kb PNG file.

Graphic Interchange Format (GIF) image export
Graphic Interchange Format (GIF) image export, 40Kb
. This image is saved to a 40Kb GIF file. Like all GIF images, it is limited to 256 colors. For XY plots this is generally not a limitation, but may result in loss of detail in 3D images with many colors.

Tagged Image File Format (TIFF) image export. This plugin will always use LZW compression. Files saved with this plugin will generally be larger than the corresponding PNG image. The license of this design software is Free Trial Software, the price is $32.00, you can free download and get a free trial before you buy. If you want to get a full or nolimited version of DPlot, you can buy this design software.