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IDProjectCategoryView StatusDate SubmittedLast Update
0015291ParaView(No Category)public2015-01-28 11:342016-08-12 09:59
ReporterPaul Melis 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version4.3 
Target VersionFixed in Version 
Summary0015291: hstack() not working
Description(Tested with official 4.3.1 Linux binaries)


As described in the User Guide on page 102 the following should work in the Python Calculator:

hstack ([ velocity_x , velocity_y , velocity_z ])


Firstly, hstack() isn't available as a function, although it can be accessed as numpy.hstack(). Secondly, I don't know what it wrong with it but its behaviour is very weird.

Setup:
1. Create a Wavelet source
2. Create a Python Calculator


Testing some Python expressions:

EXPRESSION:

hstack([1,2,3])

RESULT:

Traceback (most recent call last):
  File "<string>", line 4, in <module>
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 102, in execute
    retVal = compute(inputs, expression, ns=variables)
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 74, in compute
    retVal = eval(expression, globals(), mylocals)
  File "<string>", line 1, in <module>
NameError: name 'hstack' is not defined
Traceback (most recent call last):
  File "<string>", line 4, in <module>
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 102, in execute
    retVal = compute(inputs, expression, ns=variables)
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 74, in compute
    retVal = eval(expression, globals(), mylocals)
  File "<string>", line 1, in <module>
NameError: name 'hstack' is not defined



EXPRESSION:

numpy.hstack([1,2,3])

RESULT:

works


EXPRESSION:

numpy.hstack([RTData, RTData, RTData])

RESULT:

Traceback (most recent call last):
  File "<string>", line 4, in <module>
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 102, in execute
    retVal = compute(inputs, expression, ns=variables)
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 74, in compute
    retVal = eval(expression, globals(), mylocals)
  File "<string>", line 1, in <module>
NameError: name 'hstack' is not defined
Traceback (most recent call last):
  File "<string>", line 4, in <module>
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 105, in execute
    retVal, self.GetArrayName())
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/vtk/numpy_interface/dataset_adapter.py", line 618, in append
    narray = narray.flatten() * numpy.ones((arrLength, components))
MemoryError


EXPRESSION:

numpy.hstack([1, 2, RTData])

RESULT:

works



EXPRESSION:

numpy.hstack([1, RTData, RTData])

RESULT:

Traceback (most recent call last):
  File "<string>", line 4, in <module>
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/calculator.py", line 105, in execute
    retVal, self.GetArrayName())
  File "/home/paulm/software/ParaView-4.3.1-Linux-64bit/lib/paraview-4.3/site-packages/paraview/vtk/numpy_interface/dataset_adapter.py", line 618, in append
    narray = narray.flatten() * numpy.ones((arrLength, components))
MemoryError





TagsNo tags attached.
ProjectTBD
Topic Name
Typeincorrect functionality
Attached Files

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  Notes
(0035646)
Paul Melis (reporter)
2016-01-11 09:10

 With 5.0.0 (official linux 64-bit binaries) I get strange behaviour when using the expression

numpy.hstack([RTData, RTData, RTData])

for caculating new point data from a wavelet source. The "result" data array ends up having a ton of entries in the Data Ranges column (see below for a (partial) copy-paste of the entry). Seems like the output array dimensions are screwed up?

Also, switching to the PythonCalculator filter or switching from Properties to Information tab suddenly takes a long time (probably due to the incorrect entry being processed/generated :)).


[60.7635, 60.7635], [85.878, 85.878], [72.8093, 72.8093], [95.5371, 95.5371], [84.5918, 84.5918], [103.035, 103.035], [94.9767, 94.9767], [107.548, 107.548], [102.903, 102.903], [108.498, 108.498], [107.555, 107.555], [105.676, 105.676], [108.491, 108.491], [99.3058, 99.3058], [105.708, 105.708], [90.0291, 90.0291], [99.6115, 99.6115], [78.804, 78.804], [90.9209, 90.9209], [66.7504, 66.7504], [80.5241, 80.5241], [69.1968, 69.1968], [94.8764, 94.8764], [82.361, 82.361], [105.617, 105.617], [95.1636, 95.1636], [114.048, 114.048], [106.37, 106.37], [119.249, 119.249], [114.83, 114.83], [120.563, 120.563], [119.667, 119.667], [117.741, 117.741], [120.418, 120.418], [111.006, 111.006], [117.101, 117.101], [101.042, 101.042], [110.183, 110.183], [88.8844, 88.8844], [100.473, 100.473], [75.7489, 75.7489], [88.9574, 88.9574], [50.6213, 50.6213], [76.8541, 76.8541], [64.8802, 64.8802], [88.6543, 88.6543], [78.6815, 78.6815], [97.9983, 97.9983], [90.6916, 90.6916], [103.871, 103.871], [99.6741, 99.6741], [105.543, 105.543], [104.692, 104.692], [102.721, 102.721], [105.262, 105.262], [95.6291, 95.6291], [101.423, 101.423], [84.9925, 84.9925], [93.7012, 93.7012], [71.9211, 71.9211], [82.9917, 82.9917], [57.7266, 57.7266], [70.3819, 70.3819], [49.7505, 49.7505], [76.512, 76.512], [65.0557, 65.0557], [89.3245, 89.3245], [79.8115, 79.8115], [99.5414, 99.5414], [92.5901, 92.5901], [106.057, 106.057], [102.072, 102.072], [108.071, 108.071], [107.263, 107.263], [105.248, 105.248], [107.66, 107.66], [97.8151, 97.8151], [103.322, 103.322], [86.5357, 86.5357], [94.8313, 94.8313], [72.5914, 72.5914], [83.1673, 83.1673], [57.3845, 57.3845], [69.5111, 69.5111], [77.9343, 77.9343], [105.187, 105.187], [94.212, 94.212], [118.941, 118.941], [109.855, 109.855], [129.969, 129.969], [123.348, 123.348], [137.082, 137.082], [133.294, 133.294], [139.413, 139.413], [138.646, 138.646], [136.59, 136.59], [138.882, 138.882], [128.84, 128.84], [134.079, 134.079], [116.963, 116.963], [124.875, 124.875], 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173.636], [162.996, 162.996], [167.423, 167.423], [149.303, 149.303], [156.048, 156.048], [132.082, 132.082], [140.801, 140.801], [113.075, 113.075], [123.217, 123.217], [85.9694, 85.9694], [114.762, 114.762], [105.295, 105.295], [131.464, 131.464], [123.718, 123.718], [145.035, 145.035], [139.449, 139.449], [154.021, 154.021], [150.849, 150.849], [157.346, 157.346], [156.706, 156.706], [154.523, 154.523], [156.437, 156.437], [145.779, 145.779], [150.18, 150.18], [132.029, 132.029], [138.738, 138.738], [114.731, 114.731], [123.406, 123.406], [95.6348, 95.6348], [105.73, 105.73], [67.5466, 67.5466], [96.2929, 96.2929], [86.7796, 86.7796], [112.906, 112.906], [105.119, 105.119], [126.399, 126.399], [120.782, 120.782], [135.329, 135.329], [132.138, 132.138], [138.623, 138.623], [137.979, 137.979], [135.801, 135.801], [137.726, 137.726], [127.087, 127.087], [131.513, 131.513], [113.394, 113.394], [120.138, 120.138], [96.1724, 96.1724], [104.891, 104.891], [77.1654, 77.1654], [87.3072, 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144.223], [150.543, 150.543], [149.844, 149.844], [147.721, 147.721], [149.811, 149.811], [139.44, 139.44], [144.233, 144.233], [126.565, 126.565], [133.835, 133.835], [110.453, 110.453], [119.801, 119.801], [92.7331, 92.7331], [103.547, 103.547], [58.0625, 58.0625], [85.7569, 85.7569], [75.2139, 75.2139], [100.356, 100.356], [91.654, 91.654], [112.113, 112.113], [105.788, 105.788], [119.763, 119.763], [116.151, 116.151], [122.379, 122.379], [121.648, 121.648], [119.556, 119.556], [121.74, 121.74], [111.521, 111.521], [116.52, 116.52], [99.107, 99.107], [106.674, 106.674], [83.6225, 83.6225], [93.3255, 93.3255], [66.6294, 66.6294], [77.8231, 77.8231], [63.098, 63.098], [90.351, 90.351], [79.3758, 79.3758], [104.104, 104.104], [95.0187, 95.0187], [115.133, 115.133], [108.511, 108.511], [122.246, 122.246], [118.457, 118.457], [124.576, 124.576], [123.81, 123.81], [121.754, 121.754], [124.046, 124.046], [114.004, 114.004], [119.243, 119.243], [102.127, 102.127], [110.038, 110.038], 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(0036067)
Mathieu Westphal (developer)
2016-06-16 05:19
edited on: 2016-06-16 05:21

 I don't know about hstack, but you could access the data this way :
inputs[0].PointData['RTData']

So your expression should be (seems to works here).
numpy.hstack([inputs[0].PointData['RTData'] , inputs[0].PointData['RTData'] , inputs[0].PointData['RTData'] ])

Check out thiw wiki page about calculator expressions :
http://www.paraview.org/Wiki/Python_calculator_and_programmable_filter [^]
(0038768)
Kitware Robot (administrator)
2016-08-12 09:59

 Resolving issue as `moved`.

This issue tracker is no longer used. Further discussion of this issue may take place in the current ParaView Issues page linked in the banner at the top of this page.

 Issue History
Date Modified Username Field Change
2015-01-28 11:34 Paul Melis New Issue
2016-01-11 09:10 Paul Melis Note Added: 0035646
2016-06-16 05:19 Mathieu Westphal Note Added: 0036067
2016-06-16 05:21 Mathieu Westphal Note Edited: 0036067
2016-08-12 09:59 Kitware Robot Note Added: 0038768
2016-08-12 09:59 Kitware Robot Status backlog => closed
2016-08-12 09:59 Kitware Robot Resolution open => moved
2016-08-12 09:59 Kitware Robot Assigned To => Kitware Robot

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