Scientists and engineers often work a lot with pictorial
data — plots, nomogramms. They are friendly and
presentable but for calculations one need to extract numerical values
from the plots. Naturally, in the most cases these pictures are
plotted based on numerical source data, but they might be inaccessible
to user. There are special devices — digitizer pads,
which are used for paper-printed plots digitizing. But if the image
is loaded into the computer and is visualized on the screen, it is
more convinient to use special tool — Digitizer.
The program is easy to use: one mouse click to fix the origin of the
coordinates grid, two more clicks, entering two numbers and scale is
specified. Now, user can click on the plot and the program will mark
the points recalculating the coordinates. Once it is enough points
marked it is possible to display a curve using linear or spline
interpolation. And then check whether it fits the original plot well.
The program allows moving, inserting, deleting and editing points while
plot is digitized to the required precision. It supports many curves
at a time, saving unfinished work to the session file allowing to
continue at a later time. Finally, the digitized data can be exported
into other applications.
Originally Digitizer program was written in C++ and was designed as a
software component for Material Properties Databases
However, it appeared to be useful as a standalone Windows application.
Nowadays (summer 2004) we are developing special new implementation
using C# for .NET platform, where we introduce innovative UI and will
provide both executable version and .NET component control, which
can be embedded into any .NET application. The slightly narrowed
personal use release will also be available for free. Check the
Visual C# .NET Developer Toolbox