[Qgis-user] sorting a density field column (was: Re: AREA ATTRIBUTE FOR VECTOR LAYER)

On 17/08/17 22:41, Christine wrote: > if you want to get a density of school points in each polygon, you may > calculate this in the field calculator. > Assure, you are working in a projected coordinate sytem. Open attribute > table and choose 'open field calculator'. With the field calculator dia

Re: [Qgis-user] QGIS to manage cadastre

Hi. I have seen the plugin Cadastre for qgis, and I find it very good. I have been able to create the empty tables, but, now I need to import local data (or from France, but, I get the impression that I can not download them). I have spatial and alphanumerical data of streets, blocks, plots, own

Re: [Qgis-user] QGIS to manage cadastre

Hi! I did post a message, but, I have a yellow comment with "This post has NOT been accepted by the mailing list yet.". Any idea to change it? Thanks jorge infante rosario - santa fe - argentina -- View this message in context: http://osgeo-org.1560.x6.nabble.com/QGIS-to-manage-cadastre-tp5302

Re: [Qgis-user] AREA ATTRIBUTE FOR VECTOR LAYER

Hi Ricardo, if you want to get a density of school points in each polygon, you may calculate this in the field calculator. Assure, you are working in a projected coordinate sytem. Open attribute table and choose 'open field calculator'. With the field calculator dialog open, give a name to a new a

[Qgis-user] Connecting a bluetooth Garmin GPS to a MAC for live tracking in QGIS

Hi ! Well, the title says it all !!! I am trying to connect a Garmin 3580LM GPS unit via bluetooth so QGis can use it…Paired OK with Mac, cannot find serial port number, as neither Autodetect or Serial works… Any help appreciated ! André ___ Qgis-

Re: [Qgis-user] AREA ATTRIBUTE FOR VECTOR LAYER

Hello, Open the layer attribute table, create a new (real) field (or select an existing field) and select the $area function under Geometry. Cheers, *Renato T. de Saboya* Universidade Federal de Santa Catarina Programa de Pós-Graduação em Arquitetura e Urbanismo (PósArq) Urbanidades

Re: [Qgis-user] AREA ATTRIBUTE FOR VECTOR LAYER

Ricardo Thompson wrote > I have a polygon vector layer and want to derive an area attribute to use > to calculate the density of schools in each polygon. Can somebody help? Hi Ricardo, if you have a points layer (e.g. for school locations) and a polygon layer you may count the number of points (sc

[Qgis-user] AREA ATTRIBUTE FOR VECTOR LAYER

HI]i, I have a polygon vector layer and want to derive an area attribute to use to calculate the density of schools in each polygon. Can somebody help? Thanks, Ricardo ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo

Re: [Qgis-user] background transparency

Brett, There appears to be nothing wrong with those examples, if there where, you would be informed anyway! Another approach try this /*gdal_calc.py -A input.tif --outfile=result.tif --calc="A*(A>0)" --NoDataValue=0 */This supposes of course, you are familiar with command line GDAL! Might I su

Re: [Qgis-user] Transform not solvable

Am 16.08.2017 um 23:53 schrieb Charles Barrows: Could the transform program be confused because the locations are now in a random order in the GCP table, or could it be something else? I don't think so. It might be a matter of the Transformation type you have chosen. HTH, André Joost