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<blockquote type="cite"><b style="color: rgb(0, 0, 0); font-family:
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initial; text-decoration-color: initial;">Tudorache, Marian</b><span
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<i style="color: rgb(0, 0, 0); font-family: "Times New
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initial; text-decoration-color: initial;">Sun Jul 24 11:14:30
PDT 2022</i><span style="color: rgb(0, 0, 0); font-family:
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<hr style="color: rgb(0, 0, 0); font-family: "Times New
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<pre style="white-space: pre-wrap; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">How these .idm and and .ind files were created?
These files are created by reading ESRI coverage data used in an application under ArcInfo:</pre>
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<br>
Hi Marian,<br>
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?<br>
<br>
<br>
<blockquote type="cite">
<pre style="white-space: pre-wrap; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">Cab these file be recreated without knowing?
</pre>
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<br>
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.<br>
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 ...
.<br>
<br>
Best regards.<br>
<br>
Andrea<br>
<br>
<br>
[1]
<a class="moz-txt-link-freetext" href="https://gdal.org/drivers/vector/shapefile.html#spatial-and-attribute-indexing">https://gdal.org/drivers/vector/shapefile.html#spatial-and-attribute-indexing</a><br>
[2] <a class="moz-txt-link-freetext" href="https://gdal.org/user/ogr_sql_dialect.html#create-index">https://gdal.org/user/ogr_sql_dialect.html#create-index</a><br>
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