[Paraview] [Paraview-developers] min and max range mapping data in color map editor

[Moreland, Kenneth]

I'm still confused about the question, but based on your screenshot it
looks like your data has an RGB vector that is supposed to represent
colors. However, ParaView by default assumes that all data are some
physical quantity (like, for example, velocity). The default
representation of a vector is to take its magnitude (length) and then feed
that through a transfer function. That is where quantities like 29.5804
come from. That one in particular is the smallest magnitude of all your
colors.

I assume what you really want is to render the image using the RGB values
as colors. There is an option in the Properties panel named "Map Scalars".
Uncheck that box and ParaView should show the original colors without
using the color map.

-Ken



On 2/19/15, 8:05 AM, "dragone" <dragon.prog at gmail.com> wrote:

>Thanks Buren and Kenneth for the response,
>
>I reply the email directly to you because I didn´t see the way to do it
>through the mailing list.
>
>I agree with you, I only have the position points (x,y,z)  and the rgb
>coordinates of the surface.  As you can see in the attached picture,
>paraview creates the scalar array value in the color map editor
>(29.5804, 117.599, 256.322) and the thing I don´t understand is how
>paraview calculate these values.
>
>I hope I explained everything well.
>
>Thanks you very much.
>
>Laura
>
>
>
>El 18/02/2015 a les 21:34, Burlen Loring ha escrit:
>> also, usually ParaView colors by a scalar value and from your question
>> it seems you are looking at position arrays (x,y,z). Do you have any
>> scalar arrays defined? As Ken said,  would help to know more about
>> your data.
>>
>> On 02/18/2015 07:40 AM, Moreland, Kenneth wrote:
>>> This question is probably more appropriate for the ParaView mailing
>>>list
>>> rather than the developer's list, so I'm replying to it there.
>>>
>>> I don't think there is enough information here to answer your question.
>>> Any chance you could post an example data set?
>>>
>>> -Ken
>>>
>>>
>>>
>>> On 2/18/15, 7:56 AM, "Laura Masse" <dragon.prog at gmail.com> wrote:
>>>
>>>> Hello everybody,
>>>>
>>>> I have a question about the limits in data range. I don´t understand
>>>> how
>>>> paraview decide these limits, it seems there no any correspondence
>>>>with
>>>> the
>>>> data value.
>>>>
>>>> For example, in my case, data is a cloud points in a ply file, my
>>>> real x,
>>>> y
>>>> ,z range are :
>>>>
>>>> X -1.3 to 14.6
>>>> Y -1.28 to 2.19
>>>> Z -60 to -50.1
>>>>
>>>> Data range calculate by paraview is 159.49 to 382.243, I don´t
>>>> understand
>>>> why .
>>>>
>>>> I'm looking and looking the data but I don´t get the solution.
>>>>
>>>> Anyone can help me ?
>>>>
>>>> Advanced thanks !
>>>>
>>>> Laura
>>>>
>>>>
>>>>
>>>> -- 
>>>> View this message in context:
>>>> 
>>>>http://the-unofficial-paraview-developers-forum.34153.x6.nabble.com/min
>>>>-an 
>>>>
>>>> d-max-range-mapping-data-in-color-map-editor-tp3636.html
>>>> Sent from the The Unofficial ParaView Developers Forum mailing list
>>>> archive at Nabble.com.
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>