Or, if the curve is parametric, both axes can be dependent and the parameter, t, can be marked in steps with symbols along the curve. For plotting curves in 3D. Packages that can handle 3-D curves are usually the more general visualization tools. It is also very easy to use and is flexible. If files are given, gnuplot loads each file with the load command, in the order specified. It is derived from Xmgr.
Documentation is available from within grace.
You control dx by linking a modules together with the mouse. It can read in both structured and unstructured data in many different formats, as well as TIFF images. Once the data is read in, the individual modules handle both structured and unstructured data. With 3D data sets, dx can volume render, display arbitrary slices of the data and isosurfaces. The transparence of the slices and the isosurfaces can be set according to data values, along with their colors.