Hi David,
This solution works very well if you only want to show the location of
secondary activations upon a main activation. As well by manipulating
the threshold of the ROI you can create a contour map defining the
significance distribution within this region. Thank you so much for
the help,
John
> John,
>
> It sounds like your best bet would be to use border contours to
> outline the 2nd and 3rd activations. You can do this using Surface:
> Region of Interest Operations: Operate on Selected Nodes: Operation:
> Create Borders Around Clusters.
>
> Start by selecting the nodes of interest for the 2nd activation, then
> apply the Create Borders around Clusters operation. Choose a
> suitable border color file.
>
> Then do the same for the 3rd cluster, but choosing a different color
> if you like. Once the border(s) around the selected nodes are
> generated, project the borders, then save them. You can then adjust
> whether they are points or lines and set the line/point size/thickness.
>
> Does this meet your needs?
>
> David VE
>
>
> Does this meet your needs?
>
> On Apr 25, 2007, at 4:42 PM, John Arsenault wrote:
>
>> Hi John,
>> Sorry for not clarifying our problem more specifically. We have
>> used
>> the metric to RGB function and it is quite helpful in most cases
>> but in
>> this specific instance it would be be nice to have one metric with a
>> normal scale that ranges between 2 colors (orange-yellow; so as to
>> vividly show the maxima and outlying areas which is important to our
>> argument) while 2 other metrics are simply denoted by a circle
>> outlining
>> the areas above a threshold. We have tried to display this data using
>> the three columns of RGB but in the end it becomes a bit too
>> muddled and
>> the scale of the first activation which is very important is
>> reduced to
>> half of the range available with the two colors. Consequently a
>> solution where we are able to see one activation across a color
>> scale of
>> 2 colors and 2 other secondary activations were it would be most
>> important to see there position relative to the first activation. We
>> are now able to extract the points from a metric above a threshold.
>> Therefore is it possible that we could somehow connect these outermost
>> points creating an outline of different foci for the 2nd and 3rd
>> activations sets outline. Is this possible in Caret and if so
>> how? Or
>> is there any alternative where a main activation can be shown and 2
>> secondary sets can be shown without taking away from the
>> information of
>> the first. Thank you for all of your help,
>> John
>>>
>>> John,
>>>
>>> On page 12 of the Analysis Guide (http://brainmap.wustl.edu/caret/
>>> pdf/
>>> Caret_5.5_UserGuide_Analysis.pdf) are the steps that allow assignment
>>> of up to three metric columns to the red, green, and blue channels of
>>> an RGB paint file. So, assign one column of metric data to red and
>>> another metric column to blue. Where the two activations overlay,
>>> you will see a shade of magenta. Where the two activations do not
>>> overlap, you will see a shade or red or blue.
>>>
>>> ----------------------------------------------------------
>>> John Harwell
>>> [EMAIL PROTECTED]
>>> 314-362-3467
>>>
>>> Department of Anatomy and Neurobiology
>>> Washington University School of Medicine
>>> 660 S. Euclid Ave. Box 8108
>>> St. Louis, MO 63110 USA
>>>
>>> On Apr 25, 2007, at 2:50 PM, John Arsenault wrote:
>>>
>>>> Hello,
>>>> I am trying to show the similarities/differences between two
>>>> seperate
>>>> activations that share many common foci. The RGB works quite well
>>>> especially when presented on in the same space in powerpoint or
>>>> similiar
>>>> programs where you can toggle back and forth and see the regions of
>>>> overlap and how the activations are similiar/different. The
>>>> problem I
>>>> am experiences is that when displayed in a static figure it is
>>>> difficult
>>>> to see exactly were the overlaps are and where they are not.
>>>> Consequently it would be ideal to display one set of activations
>>>> through
>>>> the normal metric color scale and overlay some sort of outline
>>>> denoting
>>>> the second set of activations(perhaps concentric blobs denoting
>>>> T-score). Is it possible to generate these outlines in caret and
>>>> if so
>>>> how? Thank you for your help,
>>>> John Arsenault
>>>>
>>>> _______________________________________________
>>>> caret-users mailing list
>>>> caret-users@brainvis.wustl.edu
>>>> http://pulvinar.wustl.edu/mailman/listinfo/caret-users
>>>
>>> _______________________________________________
>>> caret-users mailing list
>>> caret-users@brainvis.wustl.edu
>>> http://pulvinar.wustl.edu/mailman/listinfo/caret-users
>>>
>>>
>>>
>>
>> _______________________________________________
>> caret-users mailing list
>> caret-users@brainvis.wustl.edu
>> http://pulvinar.wustl.edu/mailman/listinfo/caret-users
>
> _______________________________________________
> caret-users mailing list
> caret-users@brainvis.wustl.edu
> http://pulvinar.wustl.edu/mailman/listinfo/caret-users
>
>
>
