Hi Andrea,
I asked permission to share these coverage files with you and the company
cannot do this because the data belongs to ESRI and we are only the users of
the data.
But I removed these files .idm and and .ind and everything is fine.
Thank you.
I have one more observation.
When I converted the data from coverage to shapefile using QGIS2.18 the
geometries were simple parts. For example to extract the points from an arc
layer I had to use arc.geometry().asPolyline()
The shapefiles were under a QGIS project (.qgs).
When I open the QGIS project created with QGIS2.18 I got a message which notify
me the project is an old version of QGIS and some conversion was done.
When I ran some algorithm which tried to arc.geometry().asPolyline() I got this
error.
Traceback (most recent call last):
File "/usr/lib64/python3.9/code.py", line 90, in runcode
exec(code, self.locals)
File "<input>", line 1, in <module>
TypeError: MultiLineString geometry cannot be converted to a polyline. Only
single line or curve types are permitted.
So when I open QGIS 2.18 project something happened with the data and was
transformed from LineString to MultiLineString.
Is this normal behaviour for QGIS 3 to convert the geometry type from single
part to multiple parts?
Is any method to supress this transformation?
Thank you,
Marian
From: Qgis-user <qgis-user-boun...@lists.osgeo.org> On Behalf Of Andrea
Giudiceandrea via Qgis-user
Sent: July 25, 2022 5:12 AM
To: qgis-user@lists.osgeo.org
Subject: [EXT] Re: [Qgis-user] Filtering layer or selected features by
attributes does not work for new added features in QGIS 3.22.8
Tudorache, Marian Sun Jul 24 11:14:30 PDT 2022 How these .idm and and
.ind files were created? These files are created by reading ESRI coverage
data used in an application under ArcInfo:
Tudorache, Marian
Sun Jul 24 11:14:30 PDT 2022
________________________________
How these .idm and and .ind files were created?
These files are created by reading ESRI coverage data used in an application
under ArcInfo:
Hi Marian,
could you share a link to a sample of such ESRI coverage data file for which
the conversion to a Shapefile layer creates the .idm and and .ind attributes
indexes sidecar files?
Cab these file be recreated without knowing?
Looking at the QGIS code, it seems such attributes indexes sidecar files could
be unknowingly created if the user uses the Shapefile layer in a join (via
layer Property->Joins) enabling the "Create attribute index on join field"
option.
An user can also directly create attributes indexes using the "Create attribute
index" processing algorithm, or e.g. using the GDAL/OGR "ogrinfo" command [1]
[2], or using a Python script, or ... .
Best regards.
Andrea
[1]
https://gdal.org/drivers/vector/shapefile.html#spatial-and-attribute-indexing<https://urldefense.com/v3/__https:/gdal.org/drivers/vector/shapefile.html*spatial-and-attribute-indexing__;Iw!!P0kg3YazkQ!GzcCr3gac6KvyF6_O4cFbtPNlfuLIWHcHkhpM9nUVcW6hOYUC0_rFXJb3kpv7_1gSi8fXst9eGF6z5HWfW_38p3bmwrYD-E$>
[2]
https://gdal.org/user/ogr_sql_dialect.html#create-index<https://urldefense.com/v3/__https:/gdal.org/user/ogr_sql_dialect.html*create-index__;Iw!!P0kg3YazkQ!GzcCr3gac6KvyF6_O4cFbtPNlfuLIWHcHkhpM9nUVcW6hOYUC0_rFXJb3kpv7_1gSi8fXst9eGF6z5HWfW_38p3bgfrbURg$>
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