[Paraview] Fetching Data via Script and Interactively

[pat marion]

Try calling avgData.UpdatePipeline().  The filters are not actually executed
until there is demand.  Usually a call to Render() causes this demand, but
for IntegrateVariables there is nothing to render.  Not sure if Fetch is
supposed to automatically called UpdatePipeline or not.

Pat

On Tue, Apr 6, 2010 at 1:53 PM, Matthew Cragun <mcragun at totalsim.us> wrote:

>
> I have a bit of code where I read in a data file, extract a small portion
> of it and then integrate the variables of the extracted portion.  In my
> python code I then fetch the data from the server with the intent to write
> it out to a log file.  The issue that I have come across is when I run my
> script in the Python Shell it gives me <0,0,0> for my tuple.  Then if I
> repeat the final four lines interactively in the Python Shell starting with
> the fetch command I get a proper result of <0.14, 0.5, 0>.  Any ideas why I
> can't fetch the data properly in the script but can right after in
> interactively?
>
> The script looks like:
>
> #**********************************************************8
> #Do X-direction
> xscale = 1.0
> yscale = 1.0/(2*ymax)
> zscale = 1.0/zmax
>
> print "load Fluid"
> fluid = XMLPolyDataReader(FileName=xSlice)
> fluid.PointArrayStatus = ['U', 'p']
> RenderView1 = GetRenderView()
> DataRepresentation1 = Show()
>
> print "extract Block"
> fluidBlock = ExtractCellsByRegion(Input = fluid, IntersectWith = "Box")
> fluidBlock.IntersectWith.Scale = [xscale, yscale, zscale]
> DataRepresentation2 = Show()
>
> print "integrate"
> avgData = IntegrateVariables(Input = fluidBlock)
> DataRepresentation3 = Show()
> Render()
>
> data = servermanager.Fetch(avgData,0)
> pointData = data.GetPointData()
> avgVar = pointData.GetArray(0).GetTuple3(0)
> print avgVar
> #****************************************************
>
> Thanks,
> --
> Matt Cragun
>
> Engineer
> TotalSim LLC
> 7003 Post Road,
> Suite 415
> Dublin, Ohio 43016
> O: (614) 255-7426
> M: (801) 404-6021
> E: mcragun at totalsim.us
>
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