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

Tue Jun 11 09:13:51 PDT 2024

Richard, Sofia and list;

Sorry to top post here, but I wonder if this might be due to the various
input layers being in different coordinate systems?  I seem to recall a
problem like that from "back in the day".

On Tue, Jun 11, 2024 at 9:07 AM Richard McDonnell via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> Hi Sofia,
>
> I unfortunately am unable to access the files you sent, as there are
> restrictions on our systems here in relation to accessing files.
>
> Apologies for that.
>
> Kind Regards,
>
>
>
> Richard
>
>
>
> ——
> Richard McDonnell MSc GIS, FME Certified Professional
> *Flood Risk Management - Data Management*
>
> ——
> 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://gov.ie/opw
>
> ——
> To send me files larger than 30MB, please use the link below
> https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie
>
> Email Disclaimer:
> https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
>
> *From:* ΣΟΦΙΑ ΤΣΙΤΟΥ <sofitsitou at gmail.com>
> *Sent:* 11 June 2024 14:34
> *To:* Richard McDonnell <richard.mcdonnell at opw.ie>
> *Cc:* qgis-user at lists.osgeo.org
> *Subject:* Re: [Qgis-user] Fwd: Export data with tiff and csv files in
> QGIS 3.36.3
>
>
>
>  igme5000.tif
> <https://drive.google.com/file/d/1vxfYWoy-Z24hCoYXNwELB6gJqQC2I6c0/view?usp=drive_web>
>
> Dear Richard,
>
>
>
> Thank you very much for your quick response. I followed this procedure
> many times but unfortunately I gοt null values. Attached you can find the
> files that I used (two different tiff maps-I use one map each time- and one
> csv file with the coordinates). I can't find out if there's a problem with
> my files or something I'm not doing right in the process.
>
>
>
> Thank you.
>
>
>
> Warm regards,
>
> Sofia Tsitou
>
>
>
> Στις Τρί 11 Ιουν 2024 στις 3:42 μ.μ., ο/η Richard McDonnell <
> richard.mcdonnell at opw.ie> έγραψε:
>
> 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
>
>
>
>
>
>
> * ——*
> *Richard McDonnell MSc GIS, FME Certified Professional*
> *Flood Risk Management - Data Management*
>
> ——
> *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://gov.ie/opw
>
> ——
> To send me files larger than 30MB, please use the link below
> https://filetransfer.opw.ie/filedrop/richard.mcdonnell@opw.ie
>
> Email Disclaimer:
> https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
>
> *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
>
> 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
>
> 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
>
> Homepage: https://sites.google.com/view/sofiatsitou/home
> <https://sites.google.com/view/sofiatsitou/home>
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-- 
Chris Hermansen · clhermansen "at" gmail "dot" com

C'est ma façon de parler.
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