Thank you for your responses, Wouter and Richard! It seems there were two problems. First the DEM TIFFs were stored in iCloud, and second, the tools window was hidden under the main window. Yiur suggestions may also help, but now the merge works.
I really appreciate you both taking the time to help! Sincerely, Walter > On May 20, 2022, at 3:34 AM, Richard McDonnell via Qgis-user > <[email protected]> wrote: > > Hi Walter, > As an alternative to Wouter’s suggestion, I would recommend VRT’s (Raster è > Miscellaneous è Build Virtual Raster) Not alone does it merge/mosaic but it > also results in a small file size. It is also very easy to generate convert > that VRT to any other format output, using gdal_translate (Raster è > Conversion è Translate) > I hope this helps, > Kind Regards, > > Richard > > > —— > Richard McDonnell MSc GIS, FME Certified Professional > FRM 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 <https://gov.ie/opw> > > —— > To send me files larger than 30MB, please use the link below > https://filetransfer.opw.ie/filedrop/[email protected] > <https://filetransfer.opw.ie/filedrop/[email protected]> > > Email Disclaimer: > https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/ > <https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/> > > —— > MSc GIS, FME Certified Professional > > —— > 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://www.opw.ie <https://www.opw.ie/> > > —— > Email Disclaimer: https://www.opw.ie/en/disclaimer/ > <https://www.opw.ie/en/disclaimer/> > From: Qgis-user <[email protected] > <mailto:[email protected]>> On Behalf Of Wouter Impens via > Qgis-user > Sent: 20 May 2022 11:04 > To: qgis-user <[email protected] <mailto:[email protected]>> > Subject: Re: [Qgis-user] Problem merging 30-m SRTM tiles in QGIS 3.24.3 for > MacOS 10.14.6 > > Hi Walter, > > I'm having good results using the 'r.patch' tool from GRASS for merging > rasters. > > Hope this helps > > Greetings > Wouter > > Op do 19 mei 2022 om 23:31 schreef Walter Alvarez via Qgis-user > <[email protected] <mailto:[email protected]>>: > > I’m trying to merge either two or twelve 30-m SRTM tiles using QGIS 3.14.3. > In either case (2 or 12) I am stopped by the following problem: > > Using Raster > Miscellaneous > Merge… > > I get the “Merge" window. I try to use Input layers > Elements selected > > “…" > > That takes me to the "Multiple Selection" window, showing the 2 or 12 files I > want to merge (filenames: nXXeXXX_1arc_v3 [EPSG:4326]). > > After selecting all the files, when I click “OK” the "Multiple Selection > Window” and the “Merge” window both disappear, and I cannot figure out what > to do next, or do differently. > > I can’t figure out how to get past this problem and merge my tiles. > > Thanks for any help you can offer! > > Walter > > __________ > > > Walter Alvarez > Professor of the Graduate School > Department of Earth and Planetary Science > University of California Berkeley > > > > _______________________________________________ > Qgis-user mailing list > [email protected] <mailto:[email protected]> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > <https://lists.osgeo.org/mailman/listinfo/qgis-user> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > <https://lists.osgeo.org/mailman/listinfo/qgis-user>_______________________________________________ > Qgis-user mailing list > [email protected] <mailto:[email protected]> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > <https://lists.osgeo.org/mailman/listinfo/qgis-user> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > <https://lists.osgeo.org/mailman/listinfo/qgis-user> __________ Walter Alvarez Professor of the Graduate School Department of Earth and Planetary Science University of California Berkeley
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