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<blockquote type="cite"><b style="color: rgb(0, 0, 0); font-family:
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!important; float: none;"><span> </span></span><a
href="mailto:qgis-user%40lists.osgeo.org?Subject=Re%3A%20%5BQgis-user%5D%20Questions%20regarding%20WMS%20layers&In-Reply-To=%3C93e8be79-e5e8-34d6-cfb2-c837dcb0fbaf%40duif.net%3E"
title="[Qgis-user] Questions regarding WMS layers"
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<i style="color: rgb(0, 0, 0); font-family: "Times New
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initial; text-decoration-color: initial;">Wed Apr 13 08:47:48
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
Roman"; font-size: medium; font-style: normal;
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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;">><i> 2. When adding a new WMS layer. Could anybody explain what does the Step Size mean? when to use it? What is "contextual WMS legend" when to use it?
</i>
For these I'm not clear, but I think these are related to tiled-WMS (in which you are not trying to get one image, but you request them in parts like 256x256 pixels).
I'm not sure what 'stepsize' is... others?
</pre>
</blockquote>
<br>
Hi Richard, Robert and list,<br>
the "Request step size" option has been introduced by Jürgen E.
Fischer [1] [2] [3].<br>
<br>
The missing description of this option in the user guide / manual
was raised by me some time ago in the QGIS Documentation repository
on GitHub [4] but no one was able to find an explanation of it [5].<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;">A contextual legend is (I think) a legend which changes based on the zoom level or area you are in.</pre>
</blockquote>
<br>
It's possible to find more information about the contextual WMS
legend:<br>
- in the user guide: "you can activate checkbox Use contextual WMS
Legend if the WMS Server supports this feature. Then only the
relevant legend for your current map view extent will be shown and
thus will not include legend items for items you can’t see in the
current map." [6]<br>
- in an answer to a question to gis.stackexchange [7]<br>
- in the feature request / enhancement proposals / pull request [8]<br>
<br>
Best regards.<br>
<br>
Andrea Giudiceandrea<br>
<br>
[1]
<a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS/commit/baa5d90ddc58e469b5bdbb602793f00ec74bcb91">https://github.com/qgis/QGIS/commit/baa5d90ddc58e469b5bdbb602793f00ec74bcb91</a><br>
[2]
<a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS/commit/f924578b63a0a7a33edab8dd6d2beb454dfb3d10">https://github.com/qgis/QGIS/commit/f924578b63a0a7a33edab8dd6d2beb454dfb3d10</a><br>
[3]
<a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS/commit/72342557c3ebfaee17921659726a2a8e18d347fb">https://github.com/qgis/QGIS/commit/72342557c3ebfaee17921659726a2a8e18d347fb</a><br>
[4]
<a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS-Documentation/issues/1703#issuecomment-675533691">https://github.com/qgis/QGIS-Documentation/issues/1703#issuecomment-675533691</a><br>
[5] <a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS-Documentation/pull/6338">https://github.com/qgis/QGIS-Documentation/pull/6338</a><br>
[6]
<a class="moz-txt-link-freetext" href="https://docs.qgis.org/3.22/en/docs/user_manual/working_with_ogc/ogc_client_support.html#loading-wms-wmts-layers">https://docs.qgis.org/3.22/en/docs/user_manual/working_with_ogc/ogc_client_support.html#loading-wms-wmts-layers</a><br>
[7]
<a class="moz-txt-link-freetext" href="https://gis.stackexchange.com/questions/273196/how-to-get-legend-image-from-a-wms-using-pyqgis/273358#273358">https://gis.stackexchange.com/questions/273196/how-to-get-legend-image-from-a-wms-using-pyqgis/273358#273358</a><br>
[8] <a class="moz-txt-link-freetext" href="https://issues.qgis.org/issues/11859">https://issues.qgis.org/issues/11859</a> -
<a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS-Enhancement-Proposals/pull/15/files">https://github.com/qgis/QGIS-Enhancement-Proposals/pull/15/files</a> -
<a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS/pull/1735">https://github.com/qgis/QGIS/pull/1735</a><br>
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