Re: [GRASS-user] Convert vector to STVDS
Hello Ken, Sorry for such a late reply. AFAIU and some old experience with STVDS, the approach is by date, i.e., you need a map per date. This is because of the snapshot logic of STDS. I remember having done animations with vector time series, but again, that was a long time ago. Have you tried calling the list of vector maps instead of the stvds? At least to understand if it is a temporal or spatial topology issue. There was also a QGIS plugin by Soeren to visually explore STDS ( https://www.youtube.com/watch?v=xxHt3jJbnYw), and IIUC the time manager of QGIS required only a vector file with a date field to show animations. Best, Vero El sáb, 2 dic 2023 a las 14:56, Ken Mankoff via grass-user (< grass-user@lists.osgeo.org>) escribió: > Hi List, > > On 2023-12-01 at 16:30 -08, Ken Mankoff wrote... > > I have a vector with 115284 lines. From db.select I see > > > > | cat | ID | Date | > > | 1 | 278 | 1990-07-10 | > > | 2 | 278 | 1992-07-30 | > > | 3 | 278 | 1994-08-29 | > > | 4 | 242 | 1998-06-05 | > > | 5 | 255 | 2005-03-03 | > > > > That is, 115284 cats and 291 IDs. > > Using just one ID to start with (with 80 timestamps) I've created 80 > vectors, each with their own layer and v.timestamp. I can then patch these > together to one product with multiple layers. > > If I t.register all of these, I also see what I expect to see with > g.gui.timeline. If I run "g.gui.animation stvds=t" it reports "Topology > [...] is invalid". > > Is there a way to export STVDs and see the time component in QGIS or > KMZ/Google Earth? > > Thanks, > > -k. > ___ > grass-user mailing list > grass-user@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-user > -- Dra. Verónica Andreo Investigadora Adjunta de CONICET Instituto Gulich (CONAE - UNC) Centro Espacial Teófilo Tabanera (CETT) Falda del Cañete - Córdoba, Argentina +54 3547 40 int. 1153 https://veroandreo.gitlab.io/ ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Convert vector to STVDS
Hi List, On 2023-12-01 at 16:30 -08, Ken Mankoff wrote... > I have a vector with 115284 lines. From db.select I see > > | cat | ID | Date | > | 1 | 278 | 1990-07-10 | > | 2 | 278 | 1992-07-30 | > | 3 | 278 | 1994-08-29 | > | 4 | 242 | 1998-06-05 | > | 5 | 255 | 2005-03-03 | > > That is, 115284 cats and 291 IDs. Using just one ID to start with (with 80 timestamps) I've created 80 vectors, each with their own layer and v.timestamp. I can then patch these together to one product with multiple layers. If I t.register all of these, I also see what I expect to see with g.gui.timeline. If I run "g.gui.animation stvds=t" it reports "Topology [...] is invalid". Is there a way to export STVDs and see the time component in QGIS or KMZ/Google Earth? Thanks, -k. ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Convert vector to STVDS
Hello list, I have a vector with 115284 lines. From db.select I see | cat | ID | Date | | 1 | 278 | 1990-07-10 | | 2 | 278 | 1992-07-30 | | 3 | 278 | 1994-08-29 | | 4 | 242 | 1998-06-05 | | 5 | 255 | 2005-03-03 | | 6 | 255 | 1985-09-05 | | 7 | 255 | 1986-09-08 | | 8 | 278 | 1997-09-08 | That is, 115284 cats and 291 IDs. I'd like to work with this as an STVDS. I know how to go about this if it were all rasters, but am still (after years) wrapping my head around the GRASS vector format and power. Can someone advise how I would go about importing this into an STVDS? My first thought was to extract each line to a new vector. Obviously inefficient. Perhaps each ID to a new vector, and then each line (each unique Date) for each of those vectors is moved to a new layer? Thanks, -k. P.S. Unrelated but somewhat related. Does STR3DS let me work with 4D data: 3D (xyz) rasters that then have a time component added? Or am I still limited to 3D data? ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
