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

[ΣΟΦΙΑ ΤΣΙΤΟΥ]

Στις Τρί 11 Ιουν 2024 στις 4:38 μ.μ., ο/η ΣΟΦΙΑ ΤΣΙΤΟΥ <sofitsitou at gmail.com>
έγραψε:

>
>
> Στις Τρί 11 Ιουν 2024 στις 4:38 μ.μ., ο/η ΣΟΦΙΑ ΤΣΙΤΟΥ <
> sofitsitou at gmail.com> έγραψε:
>
>> 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 (a tiff map 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>
>>
>
>
> --
> 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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