[Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
Hi, Today I tried making a hillshade from the raster data you helped me out today -- after filling empty pixels, everything looks great. Now, when trying to set the layer symbology to hillshade, I got artifacts with the default setting and the recommend bilinear with medium. Looking for a solution, I found this conservation about the same issue (I think) from about 3 years ago; it seems to be a problem still today (working with QGIS 3.12). https://github.com/qgis/QGIS/issues/23859 So I tried the hillshade tool from GDAL in the Processing toolbox with identical setting, and everything looks great. I think that the flawed hillshade in the easily accessible Symbology dialogue needs some work or a hint to the GDAL tool in the Processing toolbox. It is frustrating for someone who is new. I add screenshots from the bad results in the Properties > Symbology dialogue and the raster image from which I started. Anyway, it was great to have a solution easily at hand ;-) Best, Maria [cid:087C3227-BD35-4041-B747-B03774EF0B18] [cid:DAEEFDBE-93EA-43F0-A90E-4A2D40F6CC92] [cid:651683BC-6B12-45EE-B43C-2E5F6E442A71] ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
Hi, So the problem occurs only when creating a Hillshade, from a DEM, using the hillshade symbology? Have you chosen the correct a factor value? Try to use the same projection in the project and in the layer so that you have no reprojection going on. Nicolas Cadieux Ça va bien aller! > Le 13 mai 2020 à 04:31, Priv.-Doz. Dr. Maria Shinoto > a écrit : > > Hi, > > Today I tried making a hillshade from the raster data you helped me out today > -- after filling empty pixels, everything looks great. > > Now, when trying to set the layer symbology to hillshade, I got artifacts > with the default setting and the recommend bilinear with medium. Looking for > a solution, I found this conservation about the same issue (I think) from > about 3 years ago; it seems to be a problem still today (working with QGIS > 3.12). > >https://github.com/qgis/QGIS/issues/23859 > > So I tried the hillshade tool from GDAL in the Processing toolbox with > identical setting, and everything looks great. > > I think that the flawed hillshade in the easily accessible Symbology dialogue > needs some work or a hint to the GDAL tool in the Processing toolbox. It is > frustrating for someone who is new. > > I add screenshots from the bad results in the Properties > Symbology dialogue > and the raster image from which I started. > > Anyway, it was great to have a solution easily at hand ;-) > > Best, > Maria > > > > > > > > > > > > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
Hi, > So the problem occurs only when creating a Hillshade, from a DEM, using the > hillshade symbology? well, I did not try hillshade in any other case yet, so, yes. > Have you chosen the correct a factor value? What is that? Perhaps there is something I miss? > Try to use the same projection in the project and in the layer so that you > have no reprojection going on. The project is set to EPSG:6670, and the Raster layer is not projected on the fly, but from a file that is in EPSG:6670. So I think, reprojection is not the problem here. Thanks for checking this up, if you have an explanation about the factor value, that might help. Best, Maria Shinoto > > Nicolas Cadieux > Ça va bien aller! > >> Le 13 mai 2020 à 04:31, Priv.-Doz. Dr. Maria Shinoto >> a écrit : >> >> Hi, >> >> Today I tried making a hillshade from the raster data you helped me out >> today -- after filling empty pixels, everything looks great. >> >> Now, when trying to set the layer symbology to hillshade, I got artifacts >> with the default setting and the recommend bilinear with medium. Looking for >> a solution, I found this conservation about the same issue (I think) from >> about 3 years ago; it seems to be a problem still today (working with QGIS >> 3.12). >> >> https://github.com/qgis/QGIS/issues/23859 >> >> So I tried the hillshade tool from GDAL in the Processing toolbox with >> identical setting, and everything looks great. >> >> I think that the flawed hillshade in the easily accessible Symbology >> dialogue needs some work or a hint to the GDAL tool in the Processing >> toolbox. It is frustrating for someone who is new. >> >> I add screenshots from the bad results in the Properties > Symbology >> dialogue and the raster image from which I started. >> >> Anyway, it was great to have a solution easily at hand ;-) >> >> Best, >> Maria >> >> >> >> >> >> >> >> >> >> >> >> >> ___ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
If the project is in one CRS, and the layer is in another, then the raster is transformed on-the-fly for sure. Give it a try. A quinta, 14/05/2020, 08:47, Priv.-Doz. Dr. Maria Shinoto < maria.shin...@zaw.uni-heidelberg.de> escreveu: > Hi, > > > So the problem occurs only when creating a Hillshade, from a DEM, using > the hillshade symbology? > > well, I did not try hillshade in any other case yet, so, yes. > > > Have you chosen the correct a factor value? > > What is that? Perhaps there is something I miss? > > > Try to use the same projection in the project and in the layer so that > you have no reprojection going on. > > The project is set to EPSG:6670, and the Raster layer is not projected on > the fly, but from a file that is in EPSG:6670. So I think, reprojection is > not the problem here. > > Thanks for checking this up, if you have an explanation about the factor > value, that might help. > > Best, > Maria Shinoto > > > > > Nicolas Cadieux > > Ça va bien aller! > > > >> Le 13 mai 2020 à 04:31, Priv.-Doz. Dr. Maria Shinoto < > maria.shin...@zaw.uni-heidelberg.de> a écrit : > >> > >> Hi, > >> > >> Today I tried making a hillshade from the raster data you helped me out > today -- after filling empty pixels, everything looks great. > >> > >> Now, when trying to set the layer symbology to hillshade, I got > artifacts with the default setting and the recommend bilinear with medium. > Looking for a solution, I found this conservation about the same issue (I > think) from about 3 years ago; it seems to be a problem still today > (working with QGIS 3.12). > >> > >> https://github.com/qgis/QGIS/issues/23859 > >> > >> So I tried the hillshade tool from GDAL in the Processing toolbox with > identical setting, and everything looks great. > >> > >> I think that the flawed hillshade in the easily accessible Symbology > dialogue needs some work or a hint to the GDAL tool in the Processing > toolbox. It is frustrating for someone who is new. > >> > >> I add screenshots from the bad results in the Properties > Symbology > dialogue and the raster image from which I started. > >> > >> Anyway, it was great to have a solution easily at hand ;-) > >> > >> Best, > >> Maria > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> ___ > >> Qgis-user mailing list > >> Qgis-user@lists.osgeo.org > >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
Dear Alexander, Thank you for looking into it. As I said, there is no projection on the fly, my layer and the file are in EPSG:6670, as is the project. I will try with a selection from the large layer today!. Best, Maria > Am 14.05.2020 um 23:15 schrieb Alexandre Neto : > > If the project is in one CRS, and the layer is in another, then the raster is > transformed on-the-fly for sure. > > Give it a try. > > A quinta, 14/05/2020, 08:47, Priv.-Doz. Dr. Maria Shinoto > escreveu: > Hi, > > > So the problem occurs only when creating a Hillshade, from a DEM, using the > > hillshade symbology? > > well, I did not try hillshade in any other case yet, so, yes. > > > Have you chosen the correct a factor value? > > What is that? Perhaps there is something I miss? > > > Try to use the same projection in the project and in the layer so that you > > have no reprojection going on. > > The project is set to EPSG:6670, and the Raster layer is not projected on the > fly, but from a file that is in EPSG:6670. So I think, reprojection is not > the problem here. > > Thanks for checking this up, if you have an explanation about the factor > value, that might help. > > Best, > Maria Shinoto > > > > > Nicolas Cadieux > > Ça va bien aller! > > > >> Le 13 mai 2020 à 04:31, Priv.-Doz. Dr. Maria Shinoto > >> a écrit : > >> > >> Hi, > >> > >> Today I tried making a hillshade from the raster data you helped me out > >> today -- after filling empty pixels, everything looks great. > >> > >> Now, when trying to set the layer symbology to hillshade, I got artifacts > >> with the default setting and the recommend bilinear with medium. Looking > >> for a solution, I found this conservation about the same issue (I think) > >> from about 3 years ago; it seems to be a problem still today (working with > >> QGIS 3.12). > >> > >> https://github.com/qgis/QGIS/issues/23859 > >> > >> So I tried the hillshade tool from GDAL in the Processing toolbox with > >> identical setting, and everything looks great. > >> > >> I think that the flawed hillshade in the easily accessible Symbology > >> dialogue needs some work or a hint to the GDAL tool in the Processing > >> toolbox. It is frustrating for someone who is new. > >> > >> I add screenshots from the bad results in the Properties > Symbology > >> dialogue and the raster image from which I started. > >> > >> Anyway, it was great to have a solution easily at hand ;-) > >> > >> Best, > >> Maria > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> ___ > >> Qgis-user mailing list > >> Qgis-user@lists.osgeo.org > >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
Ah, sorry. I misread it. :-) A quinta, 14/05/2020, 23:43, Priv.-Doz. Dr. Maria Shinoto < maria.shin...@zaw.uni-heidelberg.de> escreveu: > Dear Alexander, > > Thank you for looking into it. As I said, there is no projection on the > fly, my layer and the file are in EPSG:6670, as is the project. > > I will try with a selection from the large layer today!. > > Best, > Maria > > > > Am 14.05.2020 um 23:15 schrieb Alexandre Neto : > > > > If the project is in one CRS, and the layer is in another, then the > raster is transformed on-the-fly for sure. > > > > Give it a try. > > > > A quinta, 14/05/2020, 08:47, Priv.-Doz. Dr. Maria Shinoto < > maria.shin...@zaw.uni-heidelberg.de> escreveu: > > Hi, > > > > > So the problem occurs only when creating a Hillshade, from a DEM, > using the hillshade symbology? > > > > well, I did not try hillshade in any other case yet, so, yes. > > > > > Have you chosen the correct a factor value? > > > > What is that? Perhaps there is something I miss? > > > > > Try to use the same projection in the project and in the layer so that > you have no reprojection going on. > > > > The project is set to EPSG:6670, and the Raster layer is not projected > on the fly, but from a file that is in EPSG:6670. So I think, reprojection > is not the problem here. > > > > Thanks for checking this up, if you have an explanation about the factor > value, that might help. > > > > Best, > > Maria Shinoto > > > > > > > > Nicolas Cadieux > > > Ça va bien aller! > > > > > >> Le 13 mai 2020 à 04:31, Priv.-Doz. Dr. Maria Shinoto < > maria.shin...@zaw.uni-heidelberg.de> a écrit : > > >> > > >> Hi, > > >> > > >> Today I tried making a hillshade from the raster data you helped me > out today -- after filling empty pixels, everything looks great. > > >> > > >> Now, when trying to set the layer symbology to hillshade, I got > artifacts with the default setting and the recommend bilinear with medium. > Looking for a solution, I found this conservation about the same issue (I > think) from about 3 years ago; it seems to be a problem still today > (working with QGIS 3.12). > > >> > > >> https://github.com/qgis/QGIS/issues/23859 > > >> > > >> So I tried the hillshade tool from GDAL in the Processing toolbox > with identical setting, and everything looks great. > > >> > > >> I think that the flawed hillshade in the easily accessible Symbology > dialogue needs some work or a hint to the GDAL tool in the Processing > toolbox. It is frustrating for someone who is new. > > >> > > >> I add screenshots from the bad results in the Properties > Symbology > dialogue and the raster image from which I started. > > >> > > >> Anyway, it was great to have a solution easily at hand ;-) > > >> > > >> Best, > > >> Maria > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> ___ > > >> Qgis-user mailing list > > >> Qgis-user@lists.osgeo.org > > >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > > >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > > > ___ > > Qgis-user mailing list > > Qgis-user@lists.osgeo.org > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Hillshade as layer property vs. Processing Toolbox GDAL hillshade
O no! Everybody who cares is most welcome! :-)) > Am 15.05.2020 um 09:02 schrieb Alexandre Neto : > > Ah, sorry. I misread it. :-) > > A quinta, 14/05/2020, 23:43, Priv.-Doz. Dr. Maria Shinoto > escreveu: > Dear Alexander, > > Thank you for looking into it. As I said, there is no projection on the fly, > my layer and the file are in EPSG:6670, as is the project. > > I will try with a selection from the large layer today!. > > Best, > Maria > > > > Am 14.05.2020 um 23:15 schrieb Alexandre Neto : > > > > If the project is in one CRS, and the layer is in another, then the raster > > is transformed on-the-fly for sure. > > > > Give it a try. > > > > A quinta, 14/05/2020, 08:47, Priv.-Doz. Dr. Maria Shinoto > > escreveu: > > Hi, > > > > > So the problem occurs only when creating a Hillshade, from a DEM, using > > > the hillshade symbology? > > > > well, I did not try hillshade in any other case yet, so, yes. > > > > > Have you chosen the correct a factor value? > > > > What is that? Perhaps there is something I miss? > > > > > Try to use the same projection in the project and in the layer so that > > > you have no reprojection going on. > > > > The project is set to EPSG:6670, and the Raster layer is not projected on > > the fly, but from a file that is in EPSG:6670. So I think, reprojection is > > not the problem here. > > > > Thanks for checking this up, if you have an explanation about the factor > > value, that might help. > > > > Best, > > Maria Shinoto > > > > > > > > Nicolas Cadieux > > > Ça va bien aller! > > > > > >> Le 13 mai 2020 à 04:31, Priv.-Doz. Dr. Maria Shinoto > > >> a écrit : > > >> > > >> Hi, > > >> > > >> Today I tried making a hillshade from the raster data you helped me out > > >> today -- after filling empty pixels, everything looks great. > > >> > > >> Now, when trying to set the layer symbology to hillshade, I got > > >> artifacts with the default setting and the recommend bilinear with > > >> medium. Looking for a solution, I found this conservation about the same > > >> issue (I think) from about 3 years ago; it seems to be a problem still > > >> today (working with QGIS 3.12). > > >> > > >> https://github.com/qgis/QGIS/issues/23859 > > >> > > >> So I tried the hillshade tool from GDAL in the Processing toolbox with > > >> identical setting, and everything looks great. > > >> > > >> I think that the flawed hillshade in the easily accessible Symbology > > >> dialogue needs some work or a hint to the GDAL tool in the Processing > > >> toolbox. It is frustrating for someone who is new. > > >> > > >> I add screenshots from the bad results in the Properties > Symbology > > >> dialogue and the raster image from which I started. > > >> > > >> Anyway, it was great to have a solution easily at hand ;-) > > >> > > >> Best, > > >> Maria > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> ___ > > >> Qgis-user mailing list > > >> Qgis-user@lists.osgeo.org > > >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > > >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > > > ___ > > Qgis-user mailing list > > Qgis-user@lists.osgeo.org > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
