This error message is really bad sorry... There's also no example of
SetParameterStringList in the cookbook so it's entirely our fault.
What happens is that when calling SetParameterStringList on a ListView, the
application actually checks that the field exists in the shapefile. So you can
get an error if the field doesn't exist.
But that's not why you have this error. In your case I think you need to do:
VectorClassifier.SetParameterStringList("feat", ["area", "perimeter",
"complexity", "_mean", "_std", "pmr"])
or maybe
VectorClassifier.SetParameterStringList("feat", "area perimeter complexity
_mean _std pmr")
I'm not sure which one. Let me know if it works.
Victor Poughon
________________________________
De : [email protected] [[email protected]] de la part de Efi
Konstantinidou [[email protected]]
Envoyé : mercredi 5 décembre 2018 10:47
À : [email protected]
Objet : Re: [otb-users] vector classification, specifying parameters
Hi Victor,
I added 'setParameterStringList' to the code and get the following error:
VectorClassifier.SetParameterStringList("feat", "area", "perimeter",
"complexity", "_mean", "_std", "pmr")
TypeError: SetParameterStringList() takes at most 4 arguments (8 given)
when removing the commas the following error appears:
'VectorClassifier.SetParameterStringList("feat", "area" "perimeter"
"complexity" "_mean" "_std" "pmr")'
ERROR: ListViewParameter(00000000010C6F80): Value a not found in the list of
choices: .
On Tue, Dec 4, 2018 at 6:18 PM Efi Konstantinidou
<[email protected]<mailto:[email protected]>> wrote:
No, will try it (but tomorrow cuz I'm leaving the office soon) and let you know.
Thanks a lot!
E.
On Tue, Dec 4, 2018 at 6:11 PM Poughon Victor
<[email protected]<mailto:[email protected]>> wrote:
Did you try SetParameterStringList?
Victor Poughon
________________________________
De : [email protected]<mailto:[email protected]>
[[email protected]<mailto:[email protected]>] de la part de
Efi Konstantinidou [[email protected]<mailto:[email protected]>]
Envoyé : mardi 4 décembre 2018 17:04
À : [email protected]<mailto:[email protected]>
Objet : Re: [otb-users] vector classification, specifying parameters
Hello Victor,
thanks for replying.
It does run form the command line. But I can't figure out the correct syntax
for python. When the "feat" line is omitted in python, it does run but all
polygons are classified in one class, which is wrong... In the command line I
also specify all the attribute table columns to be used, as a 'list', like:
- feat area perimeter complexity etc...
And I haven't found any sample code that includes more than one features. Do
you have any idea where to look for an answer? Also posted a question on GIS
stack exchange with no results yet..
Regards,
E
- feat area perimeter complexity etc..
jhm
On Tue, Dec 4, 2018 at 5:09 PM Poughon Victor
<[email protected]<mailto:[email protected]>> wrote:
Hi Efi
What are the field names in your shapefile? Are you sure it contains "area"?
You can see it in QGIS (right click -> "Open attributes table" I think).
Another debug thing you can try is calling from the command line (with
otbcli_VectorClassifier...) to see if you get the same error.
Best,
Victor Poughon
________________________________
De : [email protected]<mailto:[email protected]>
[[email protected]<mailto:[email protected]>] de la part de
Efi [[email protected]<mailto:[email protected]>]
Envoyé : mardi 4 décembre 2018 14:39
À : otb-users
Objet : [otb-users] vector classification, specifying parameters
Hello,
I am trying to classify a vector layer with otb and python. In Monteverdi all
works fine. I think there must be a mistake in the code when defining the
'cfield' and/ or the 'feat' parameters. Here is the code (also attached as .py
file):
import otbApplication
VectorClassifier = otbApplication.Registry.CreateApplication("VectorClassifier")
VectorClassifier.SetParameterString("in", "zonals_22.shp")
VectorClassifier.SetParameterString("model", "model.txt")
#VectorClassifier.SetParameterString("cfield", "class")
#VectorClassifier.SetParameterString("feat", "area", "perimeter", "complexity",
"_mean", "_std", "pmr")
VectorClassifier.SetParameterString("out", "out4.shp")
VectorClassifier.ExecuteAndWriteOutput()
Output is: itk::ERROR: ListViewParameter(0000000001023A20): Cannot find area
Any suggestions?
E
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