[Qgis-user] Fwd: Export data with tiff and csv files in QGIS 3.36.3

[Richard McDonnell]

Hi Sofia,
So I will start from the beginning, hopefully I understand your query properly…


1.       Add your Raster to the Canvas

2.       Using the Data Source Manager and Delimited Text, I add the CSV, making sure the Headers, Columns and rows are correct, while also setting/specifying the X, Y and Z fields (as required)

3.       This will result in a Point Dataset being added to the Canvas, with the CSV loaded as a temporary layer

4.       In the Processing Toolbox search bar, type “sample” and then select Sample raster values

a.       Input layer set to the Point Dataset

b.       Raster Layer set to the Raster you want to analyse

c.       Output column Prefix is handy if you have multiple datasets you want to sample, as you can change this for each subsequent sample.

d.       Sampled you can specify a Location for your output dataset, or you can leave it as a temporary layer until you have carried out all sampling.

I hope that clarifies things,

Kind Regards,

Richard



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Richard McDonnell MSc GIS, FME Certified Professional
Flood Risk Management - Data Management

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From: QGIS-User <qgis-user-bounces at lists.osgeo.org> On Behalf Of S?F?? ?S???? via QGIS-User
Sent: 11 June 2024 12:52
To: qgis-user at lists.osgeo.org
Subject: [Qgis-user] Fwd: Export data with tiff and csv files in QGIS 3.36.3


Dear QGIS team,

I have two maps in tiff format and coordinates in csv format and I try through zonal statistics and sample raster values to export the data but it gives me null values. Could you tell me the steps to extract the data because I might be making a mistake?

Thank you in advance,
Sofia Tsitou
--
Tsitou Sofia

Αdjunct Lecturer
Department of Economics
University of Ioannina
Greece

Post Doctoral Fellow
Department of Economics
University of Macedonia, Thessaloniki
Greece

Research Fellow
DAISSy Research Group
Hellenic Open University
Greece

e-mail: sofitsitou at gmail.com<mailto:sofitsitou at gmail.com>
Homepage: https://sites.google.com/view/sofiatsitou/home <https://sites.google.com/view/sofiatsitou/home>


--
Tsitou Sofia

Αdjunct Lecturer
Department of Economics
University of Ioannina
Greece

Post Doctoral Fellow
Department of Economics
University of Macedonia, Thessaloniki
Greece

Research Fellow
DAISSy Research Group
Hellenic Open University
Greece

e-mail: sofitsitou at gmail.com<mailto:sofitsitou at gmail.com>
Homepage: https://sites.google.com/view/sofiatsitou/home <https://sites.google.com/view/sofiatsitou/home>
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