Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work SOLVED

2020-05-18 Thread Nicolas Cadieux
Nice to know you got it! Nicolas Cadieux Ça va bien aller! > Le 16 mai 2020 à 06:13, Priv.-Doz. Dr. Maria Shinoto > a écrit : > > Hi, > > I had some intensive learning during the last days, and thanks again for your > help. > > After all it turns out that it is something Nicolas wrote,

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work SOLVED

2020-05-16 Thread Priv.-Doz. Dr. Maria Shinoto
Hi, I had some intensive learning during the last days, and thanks again for your help. After all it turns out that it is something Nicolas wrote, it is a matter of the projection. The Japanese software just exported to a projected format, but the original data seem to be in lat long. I

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-14 Thread Priv.-Doz. Dr. Maria Shinoto
Hi, I am testing the GDAL tools the way you explained, but I still get artifacts. When I say artifacts, I do not mean pixels, I know what pixels are since I started using a scanner nearly 30 years ago, I think of sudden jumps in the lightness, which leads to lines and grids in the raster

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-14 Thread Nicolas Cadieux
Nicolas Cadieux Ça va bien aller! > Le 14 mai 2020 à 23:12, Nicolas Cadieux a > écrit : > > Hi, > > > See below for comments. > > Nicolas Cadieux > Ça va bien aller! > >> Le 14 mai 2020 à 22:21, Priv.-Doz. Dr. Maria Shinoto >> a écrit : >> >> Hi again, >> >> and sorry for the

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-14 Thread chris hermansen
María and list On Thu, May 14, 2020, 00:46 Priv.-Doz. Dr. Maria Shinoto < maria.shin...@zaw.uni-heidelberg.de> wrote: > Chris, > > Thank you for your ideas. I am trying now, but there are some questions: > > > For this, rather than use the Raster > Rasterize tool, the approach > should be: > >

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-14 Thread Nicolas Cadieux
Hi, See below On 2020-05-14 3:53 a.m., Priv.-Doz. Dr. Maria Shinoto wrote: Hi, it seems that my points are too many. I am waiting for the TIN process to finish (needs a few hours it seems), then I will select a part of the point I am interested in and go on working on that selection. Then I

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-14 Thread Priv.-Doz. Dr. Maria Shinoto
Hi, it seems that my points are too many. I am waiting for the TIN process to finish (needs a few hours it seems), then I will select a part of the point I am interested in and go on working on that selection. Then I will try your suggestions, thank you. Some other remarks: > You can also

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-14 Thread Priv.-Doz. Dr. Maria Shinoto
Chris, Thank you for your ideas. I am trying now, but there are some questions: > For this, rather than use the Raster > Rasterize tool, the approach should be: > • open the processing toolbox Processing > Toolbox > • in the toolbox open Interpolation > TIN interpolation OK until

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-13 Thread Nicolas Cadieux
Hi, You can also correct this 5x5 problem by using gdal grid with Nearest neighbour interpolation. You could use the point data to do this. I also post a small presentation that can help go from vector to raster with point data. Sometimes, keeping it simple is better.

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-13 Thread chris hermansen
Maria and list, On Tue, May 12, 2020 at 7:00 PM Priv.-Doz. Dr. Maria Shinoto < maria.shin...@zaw.uni-heidelberg.de> wrote: > Hi, > > Thanks for helping. -- Thanks to you and Chris Hermansen I got a result, > but it could be better. > > For the records, a short explanation: > > * > Well, I

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-12 Thread Priv.-Doz. Dr. Maria Shinoto
Chris, Thanks for helping me out. Your detailed explanation was really helpful. I could not have done without it, thanks for taking so much time. A short memo about what I did is in my answer to Nicolas Cadieux. Best, Maria > Am 13.05.2020 um 01:36 schrieb chris hermansen : > > Maria

Re: [Qgis-user] vector point grid to raster grid -- pixel size does not work

2020-05-12 Thread Priv.-Doz. Dr. Maria Shinoto
Hi, Thanks for helping. -- Thanks to you and Chris Hermansen I got a result, but it could be better. For the records, a short explanation: * Well, I checked the properties, jgd2011 is in Meters, the raster is said to be 5m. In the official Japanese viewer, which creates a beautiful