VMD-L Mailing List

From: DEBOSTUTI GHOSHDASTIDAR (debostutighosh_at_gmail.com)
Date: Sat Oct 11 2014 - 00:31:44 CDT

Hi John

Sorry for the use of the inappropriate terms. By the data set range I mean
the entire set of isovalues and I wanted to ask if I set the *isovalue to
the same value (say 20) *for both the data sets (where the full isovalue
range for set 1 is say 0 to 120 and that for set 2 is 0 to 80) am I making
a meaningful comparison?

Thanks

On Fri, Oct 10, 2014 at 8:37 PM, John Stone <johns_at_ks.uiuc.edu> wrote:

> Hi,
> When you refer to the "data range", I assume you are
> referring to the "color scale data range" control in the
> graphical representations trajectory tab.
> If you set the color scale data range values for two representations
> to the same value range, and the physical values in two different
> volumetric data sets are in the same units, then yes, you can make
> a direct visual comparison between the coloring of one data set
> vs. the coloring of another. When the color scale data ranges are
> set the same, the two datasets will be shown with the same mapping
> of values to colors.
>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
>
> On Thu, Oct 09, 2014 at 12:54:39PM +0530, DEBOSTUTI GHOSHDASTIDAR wrote:
> > Dear VMD users
> >
> > I have two sets of data for the spatial distribution of solvent around
> > solute in two different systems. The data range for both the sets are
> > different. How do I compare the solvent distribution in both the
> systems?
> > For example if I set the data range to say 0 to 20 in both sets
> (where the
> > full range for set 1 is say 0 to 120 and that for set 2 is 0 to 80)
> am I
> > making a meaningful comparison?
> >
> > Thanks
> > --
> > Debostuti
> > Department of Biotechnology
> > Indian Institute of Technology Madras
>
> --
> NIH Center for Macromolecular Modeling and Bioinformatics
> Beckman Institute for Advanced Science and Technology
> University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> http://www.ks.uiuc.edu/~johns/ Phone: 217-244-3349
> http://www.ks.uiuc.edu/Research/vmd/
> 

-- 
Debostuti Ghosh Dastidar
Department of Biotechnology
Indian Institute of Technology Madras