Re: [Qgis-user] reduce resolution of an image in qgis

2022-06-24 Thread Nicolas Cadieux via Qgis-user
Hi, Others are responding to your question with methods and tools. I will just state that your question is absolutely valid and is not often looked at carefully by researchers. The question is “how do I resample my data and conserve the best possible integrity of this data?” That will

Re: [Qgis-user] reduce resolution of an image in qgis

2022-06-24 Thread Micha Silver via Qgis-user
You don't necessarily need the Processing Toolbox. You can run the tool in a command shell. If you're on Windows, open the OSGeo shell, and type 'gdal_translate --help' to get a summary of the options. If you want to use the

Re: [Qgis-user] reduce resolution of an image in qgis

2022-06-24 Thread carlos h via Qgis-user
Hi, excuse the ignorance, how can I use the grdal translate tools from the processing toolbox? Thank you Carlos El vie, 24 jun 2022 a las 7:17, Zoltán Siki () escribió: > you can used grdal translate from the processing toolbox. You have to add > additional command line parameters, for

Re: [Qgis-user] reduce resolution of an image in qgis

2022-06-24 Thread Zoltán Siki via Qgis-user
you can used grdal translate from the processing toolbox. You have to add additional command line parameters, for example -outtsize 50% 50% to make pixel double size alternatively you can also use -tr switch to define the output pixel size e.g. -tr 1.0 1.0 to change the resolution to 1

Re: [Qgis-user] reduce resolution of an image in qgis

2022-06-23 Thread Micha Silver via Qgis-user
On 23/06/2022 21:51, carlos h via Qgis-user wrote: Hello, I have an NDVI image that has a pixel of 4 centimeters, that is, 16 square centimeters. I have 2 doubts: 1. What method can I use to

[Qgis-user] reduce resolution of an image in qgis

2022-06-23 Thread carlos h via Qgis-user
Hello, I have an NDVI image that has a pixel of 4 centimeters, that is, 16 square centimeters. I have 2 doubts: 1. What method can I use to generalize the NDVI image to 1 square meter in pixel size? 2. When generalizing the NDVI image to 1 square meter per pixel, what value does that new pixel