[Qgis-user] proj 4 use degrees instead of grad

2019-06-14 Per discussione Julien Guilloux
Hi list, I would like to generate a polygon grid. The coordinate system i need is the old French NTF (with grad unit and Paris as first meridian). No trouble, there is the espsg code: 4807. When looking description of 4807 in spatialrefsys, grad as unit are well indicate. So... all seem

Re: [Qgis-user] results Measure Tool vs. length()

2018-05-18 Per discussione Julien Guilloux
2000, coordinateur des porter-à-connaissance Parc national des Écrins 04 92 40 20 56 / 06 99 77 38 26 [ http://www.ecrins-parcnational.fr/ | www.ecrins-parcnational.fr ] De: "Julien Guilloux" <julien.guill...@ecrins-parcnational.fr> À: "Michel Stuyts" <michel.st

Re: [Qgis-user] results Measure Tool vs. length()

2018-05-18 Per discussione Julien Guilloux
Hi Michel, Never use epsg 3857 for measurement beacuse it is not a "projection"... this "pseudo projection mercator" 3857, called often "Popular Visualisation " is pseudo Because only use for visualization applications. example in France : 3200 km for a road for example, instead of 2100

[Qgis-user] add a custom projection, Qgis 2.18.4

2017-03-28 Per discussione Julien Guilloux
Hi, i want to use an old French coordinate projection . this projection (called ATIG / Bonne France Etat Major) can be seen here : http://spatialreference.org/ref/sr-org/8192/ i clic on proj4 so i can see and i can copy the Proj 4 définition as follow: +proj=bonne +lon_0=0 +lat_1=0

Re: [Qgis-user] save layer as with OGR2OGR options

2015-02-17 Per discussione Julien Guilloux
Thanks Victor, That's what i thought to...There are some (litte) steps to do manualy. But i need to propose my users a easy script, so i am going to look for a quick script ( a good way to have a look to model and script...) best regards, Julien -- AFAIK the