Hi, Please remember to use reply-to-all for sending a copy to the list as well.
-Jukka- -----Alkuperäinen viesti----- Lähettäjä: [email protected] <[email protected]> Lähetetty: maanantai 14. joulukuuta 2020 14.27 Vastaanottaja: Rahkonen Jukka (MML) <[email protected]> Aihe: RE: [gdal-dev] gdal_translate -scale Hi, Thank you so much for your quick response. I can see the issue here. My data is 16 bits so it can be omitted in the -scale param. I will have to look for Python aid as you said, then. Have a nice Monday! Jesús Maria Morán Rosado Project Engineer Av. Cerro del Águila, 3, 28703 S.S. de los Reyes, Madrid CONFIDENTIALITY: This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. -----Original Message----- From: gdal-dev <[email protected]> On Behalf Of jratike80 Sent: lunes, 14 de diciembre de 2020 13:18 To: [email protected] Subject: Re: [gdal-dev] gdal_translate -scale Hi, If your output is 8 bit you can just use -scale without min/max values. From https://gdal.org/programs/gdal_translate.html: "Rescale the input pixels values from the range src_min to src_max to the range dst_min to dst_max. If omitted the output range is 0 to 255. If omitted the input range is automatically computed from the source data." If your data is higher than 8 bit and you want to keep it so you are out of luck with gdal_translate because it first omits the output range and sets it into 0-255 before it can omit the input range and compute the range automatically. The current behavior is not optimal for certain use cases (https://gis.stackexchange.com/questions/294129/min-max-stretch-using-gdal-translate-in-a-batch). Some programmer learning GDAL could take this as a challenge and formulate how to improve the automatic scaling support so that it would not break too much. As a first aid a Python script for automatic min/max scaling would be nice, and why not with an option to utilize the histogram and use for example +/- 98% of the histogram. Or mean +/- (2 x RMS). -Jukka Rahkonen- jesus.moran wrote > Hello GDAL team and thank you for welcome me. > > > > I have an issue with the gdal_translate command. I would like to use > the “STATISTICS_MIN” and “STATISTICS_MAX” metadata key values in the > -scale parameter of the program, so I don’t need to specify it > manually every time I want to scale the output. Is there any way to do > this? > > > > Thanks a lot in advance! > > > > > <http://www.solute.es/> > > > Jesús Maria Morán Rosado > Project Engineer > > Av. Cerro del Águila, 3, 28703 S.S. de los Reyes, Madrid > > CONFIDENTIALITY: This e-mail and any attachments are confidential and > may be privileged. If you are not a named recipient, please notify the > sender immediately and do not disclose the contents to another person, > use it for any purpose or store or copy the information in any medium. > > > > > _______________________________________________ > gdal-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/gdal-dev > > > image001.gif (2K) > <http://osgeo-org.1560.x6.nabble.com/attachment/5452429/0/image001. > gif> -- Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
