[Qgis-user] SCP Plug-In Question

[Richard McDonnell]

Hi Molly,
As you are aware, the SCP uses the polygons to create classifications. As you have already got this, you could just try Reclassify by Table.
I have not tested this for your specific requirements, but you can add in rows for each classification and specify your ranges.
I’m not sure of the format of the USGS signatures, nor have I any data to hand to test.
I hope this helps,

Kind Regards,

Richard.


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Richard McDonnell MSc GIS, FME Certified Professional
FRM Data Management

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MSc GIS, FME Certified Professional

——
Oifig na nOibreacha Poiblí
Office of Public Works

Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
Jonathan Swift Street, Trim, Co Meath, C15 NX36
——
M +353 87 688 5964 T +353 46 942 2409
https://https://gov.ie/opw<https://www.opw.ie>

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From: QGIS-User <qgis-user-bounces at lists.osgeo.org> On Behalf Of Molly D via QGIS-User
Sent: 05 October 2023 16:52
To: qgis-user at lists.osgeo.org
Subject: [Qgis-user] SCP Plug-In Question

Hi,

I was wondering if it is possible to import a file containing spectral signatures to classify an image using the SCP Plug-in? I have tried importing spectral signatures from the USGS library, but it seems like I still need to draw a polygon on my image to do any kind of classification. Is there a way I can carry out spectral signature classification without manually drawing polygons and creating that training data myself?

Thanks!
M
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