Yes, I did set a resolution as you explained: [image: Imagem inline 1]
I could finally get a file but the resolution is too poor (all pixelized)> I tried with none compression but still not good. I guess the horizontal and vertical resolutions are too low, but don´t really understand the parameter to be sure what would be a good value. Any sugestions? 2016-11-07 19:27 GMT-02:00 Andreas Neumann <[email protected]>: > So - have you tried setting a resolution and extent? The resolution input > fields need to have values. Empty fields don't work. And no - QGIS can't > autodetect it. It does not know the native resolution of WMS services. > > Andreas > > Am 07.11.2016 um 22:23 schrieb Juliana Mori: > > sorry, I hit enter before finishing the email... Again: > > Hi Andreas, > > for sure it would be much better to use the webservice directly but I´m > already investigating with CARTO and it seems there´s no WMS support - if I > have any update on this, I´ll share with you. > > EPSG:4326 would be perfect for me, even though I know the original file is > in Magna Sirgas (EPSG:4686). So, if I understood right, I need to specify a > resolution in decimal degrees, right? > > I´m saving a raster image with only 3 color values (assigned by its column > "dn" which indicates if the pixels correspond to forest, no forest or no > information). Sorry, I don´t know to say if it´s orthoimage. > I´ve already polygonized the other tiff files I had from this series (but > were not from WMS) and the results were meaningful, probably because > there´re only this 3 colors. > > > > 2016-11-07 19:18 GMT-02:00 Juliana Mori <[email protected]>: > >> Hi Andreas, >> >> for sure it would be much better to use the webservice directly but I´m >> already investigating with CARTO and it seems there´s no WMS support - if I >> have any update on this, I´ll share with you. >> >> EPSG:4326 would be perfect for me, even though I know the original file >> is in Magna Sirgas (EPSG:4686). >> >> >> >> 2016-11-07 19:15 GMT-02:00 Andreas Neumann <[email protected]>: >> >>> Hi Juliana, >>> >>> First, I would investigate with Carto, if you really cannot embed a WMS. >>> It would be much better to use the webservice directly rather than >>> downloading and uploading and then end up with an outdated image. >>> >>> If that does not work, you need to set a meaningful resolution. As we >>> can see in your screenshot the resolution text input fields are empty. Also >>> check if the projection is correct. Do you really want to save in EPSG:4326 >>> or rather in a meter based system? >>> >>> What kind of data are you saving? Orthoimages or maps with few colors or >>> black and white? If it is orthoimages, I would use JPEG compression in the >>> Geotiff, otherwise probably deflate/LZW. >>> >>> Then you have to find a meaningful resolution. If you really want to >>> save in EPSG:4326, you have to specify a resolution in decimal degrees. Try >>> with larger values first, such as 0.05 and then, if it is too coarse go to >>> smaller values. >>> >>> About polygonizing raster to vector: this really depends on the content >>> - and I kind of doubt it if you really get meaningful results. Maybe it >>> works with few colors and homogeneous areas. It certainly would not work >>> well for aerial images. >>> Hope it helps, >>> Andreas >>> >>> Am 07.11.2016 um 22:05 schrieb Juliana Mori: >>> >>> Hi Andreas, >>> >>> thanks for your reply. >>> >>> I chose layer extent for extensions and current layer for resolution but >>> still doesn´t work. >>> >>> >>> >>> >>> Should I do this in a different way? >>> >>> About the bigger question, no, CARTO doesn´t allow uploading geotiffs. >>> What I´ve done so far is polygonizing the rasters in QGis and uploading the >>> converted shapefile to CARTO. As you said WMS can´t be converted into >>> shape, I´m not sure this is going to work at all... won´t I be able to >>> polygonize a raster downloaded from a WMS server? >>> >>> All the best, Juliana. >>> >>> >>> >>> >>> >>> 2016-11-07 18:44 GMT-02:00 Andreas Neumann <[email protected]>: >>> >>>> Hi Juliana, >>>> >>>> "Save AS" as a WMS should work fine - but you need to specify a useful >>>> extent and resolution (in map units of your projection). Otherwise it >>>> probably fails. >>>> >>>> I just tested it and it works fine. >>>> >>>> The bigger question is: will CARTO allow to upload larger Geotiff >>>> files? Did you check that? >>>> >>>> Note that WMS are always raster. You can't convert it into a shp file. >>>> >>>> Andreas >>>> >>>> Am 07.11.2016 um 21:27 schrieb Juliana Mori: >>>> >>>> Hello, >>>> >>>> I have loaded a wms server to QGis, which is a raster format. As I need >>>> to use this in an external aplication (CARTO) which does not support wms, >>>> I´m trying to export the server loaded into QGIS through "save as" >>>> funcionality. But it´s not working. >>>> >>>> Do you know how I can export the wms loaded to a file (raster or shp)? >>>> >>>> Thanks a lot, Juliana. >>>> >>>> >>>> ps:: I´m working with QGis Essen, 2.14.3 >>>> >>>> -- >>>> *Juliana Mori* >>>> www.julianamori.com >>>> >>>> >>>> >>>> _______________________________________________ >>>> Qgis-user mailing [email protected] >>>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user >>>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user >>>> >>>> _______________________________________________ Qgis-user mailing list >>>> [email protected] List info: http://lists.osgeo.org/mailman >>>> /listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman >>>> /listinfo/qgis-user >>> >>> -- >>> *Juliana Mori* >>> www.julianamori.com >>> +55 11 999653145 >>> >>> -- >> *Juliana Mori* >> www.julianamori.com >> +55 11 999653145 >> > -- > *Juliana Mori* > www.julianamori.com > +55 11 999653145 > > -- *Juliana Mori* www.julianamori.com +55 11 999653145
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