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

Tue Jun 11 09:39:45 PDT 2024

Thank you very much both of you for your help and your comments!

Kind regards,
Sofia

Στις Τρί 11 Ιουν 2024 στις 7:14 μ.μ., ο/η chris hermansen <
clhermansen at gmail.com> έγραψε:

> 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.
>

-- 
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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