I want to change the data values of a three-dimensional field using
a transfer function. The colormap widget seems ideal for specifying
the transfer function interactively. How can I turn a component
of that color field into a single datum for each point of the field?
I take the original data and use Colormap and then I combine the
original data with the colors using the module "Color". The result
is a color field. But now I want just one component of that field,
for example red, to be the data. I took the original field and am
using the module Replace to the data part of the field but the
isosurface module fails and I suppose that the field I am creating
does not have the right type of "data" component. I should add, I take
the output of color and use Mark to change it to data. But how do
I pick one component? I tried inserting various modules such as
Compute and Extract but I have not found the right combination to
make the color field into a single-component data field. I do not
know if my explanation is clear, I fear it is not, but anyway the
idea is simple. I have a field with simple rectangulare connections
and one data component of type unsigned short. To simplify, suppose
the values are float from 0.0 to 1.0 . I want to convert 0.5 to 1.0
and convert 1.0 to 0.0, that is a transfer function the makes the
middle values have the largest values, in that way the isosurface
will show the part that is interesting, around 0.5 . The only tool
that I see already available for interacting with a transfer function
is the colormap Editor, so I am trying to find a way to use that.
Thanks for any help you can provide,
Alan Scheinine Email: [EMAIL PROTECTED]
