Re: [Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread Nicolas Cadieux
Good pointers Nyall, I need to start working with this stuff. Nicolas Cadieux https://gitlab.com/njacadieux > Le 21 avr. 2021 à 21:24, Nyall Dawson a écrit : > > On Thu, 22 Apr 2021 at 06:43, wxgis wrote: >> >> Hi - >> Wondering if there is existing Python(3) script code that can take an

Re: [Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread Stephen Kirby
Nyall and Nicholas (earlier) and qgis list -- This is fantastic information. I'm going to dive in and see what I can discover. Automatic conversion of the model to Python script is definitely neat! Really appreciate this awesome forum and the availability of QGIS! Best to all, Steve On Wed, Ap

Re: [Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread Nyall Dawson
On Thu, 22 Apr 2021 at 06:43, wxgis wrote: > > Hi - > Wondering if there is existing Python(3) script code that can take an (ESRI) > shape file as input and then calculate latitude/longitude/elevation values > for country boundaries. For example, if the input file is a SHP file for > France, the

Re: [Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread Nicolas Cadieux
Hi, Users of this group will give you good information on the QGIS Python api. You can use that. Another way is to use the python Shapely library. Using the object.bounds method, you will have you xy min and max coordinate. If you use the geopandas library, you can use he same shapely metho

Re: [Qgis-user] Breaking a territory into zones

2021-04-21 Thread Nicolas Cadieux
Hi, It’s difficult to help without knowing how the data is organized (ex number of people are points data, polygon data, 1 points per person vs aggregated data..) You can search for grouping, cluster analysis, heat map, voronoi polygons, concave hull. Once you have polygons you will need to spl

[Qgis-user] Data issues CRS and Elevation

2021-04-21 Thread Iain
"and this places it off the west coast of Ethiopia.?" A familiar issue for many of us with the wrong CRS or reversing the easting and northing. I wasn't quite sure what the solution for the problem was though. Could you georeference the raster? With GPS heights the rule of thumb, handed to me b

Re: [Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread wxgis
Chris and list -- "...you can convert your polygons or lines to points and then again assuming you have a DEM you can interpolate the elevations at the points." Thanks for your answer - from your last sentence Chris, does anyone know of some python code (or snippets will help too) that can take a

[Qgis-user] Breaking a territory into zones

2021-04-21 Thread Jason Aleksi
Can someone point me in the right direction? I am not sure what I should be searching for in reference to the task below. I work for a non-profit organization. Up to this point, my limited GIS knowledge has been focused around plotting and integrating data with qGIS. I am tasked with finding a w

Re: [Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread chris hermansen
Steve and list, On Wed, Apr 21, 2021 at 1:41 PM wxgis wrote: > Hi - > Wondering if there is existing Python(3) script code that can take an > (ESRI) > shape file as input and then calculate latitude/longitude/elevation values > for country boundaries. For example, if the input file is a SHP fil

[Qgis-user] python(3) script to calculate latitude longitude values from (ESRI) shape file

2021-04-21 Thread wxgis
Hi - Wondering if there is existing Python(3) script code that can take an (ESRI) shape file as input and then calculate latitude/longitude/elevation values for country boundaries. For example, if the input file is a SHP file for France, the output would be the lat/lon/elevation values for the co

[Qgis-user] Plugins Repository Unavailable

2021-04-21 Thread jwellman
Plugins manager says the plugin repository URL is unavailable. https://plugins.qgis.org/plugins/plugins.xml?qgis=3.18 When I paste the listed URL in, I do see a web page with the following first sentence. "NOTE: The preferred way to install QGIS plugins is via the Plugin Manager in QGIS itself

[Qgis-user] Possibility for Raster Natural Breaks Reclassification in QGIS

2021-04-21 Thread Bram Roozen
Dear, I am using PyQGIS in QGIS 3.10 and I am working on a script to standardise and automate heatmap creation. Currently, the only way (by my knowledge) to reclassify rasters in QGIS (through the Processing Toolbox) is with r.reclass or the SAGA reclassify values (simple and 'not simple'). r.r

Re: [Qgis-user] (no subject) (elevation question)

2021-04-21 Thread Greg Troxel
To the OP: agreement within 11m for a pseudorange solution is entirely ok. I don't call that an error; I call it matching. As an experiment, find a physical point you can reoccupy, and on 10 days not all at the same time of day go take a measurement and then tell us the statistics of the data s

Re: [Qgis-user] (no subject) (elevation question)

2021-04-21 Thread Nicolas Cadieux
Hi, Thanks for the precision. So they are basically prone to the same problem (which is reassuring). My guess is that the true befits is that they add a compass with the barometer so you can take a heading reading when not moving... I guess that is worth 100 bucks! Guess we’re moving away

Re: [Qgis-user] (no subject) (elevation question)

2021-04-21 Thread kirk
Hi Nicolas.You can set the barometer my using a known point and elevation or by setting the current atmospheric pressure. As with an anologue altimeter, your readings will change throughout the day as the pressure changes. This is less of a problem if you are out on a sunny day with a high press

Re: [Qgis-user] (no subject) (elevation question)

2021-04-21 Thread Nicolas Cadieux
Hi, Interesting but I very much doubt they are not applying a geoid on top of the ellipsoid. If they can put maps of the earth on the device, they can put a geoid with a posting of 15´x15´! I have been wondering about those barometric altimeters GPS for back packing. I have a none electron

Re: [Qgis-user] (no subject)

2021-04-21 Thread Kirk Schmidt
Hi jean: Another issue is that you can set your elevation reference point in most Garmin units to either use the height above the ellipsoid or and approximation mean sea level.  This setting will also have an impact on your observed elevation. Kirk Schmidt On 4/20/2021 8:45 PM, jean Lukusa

[Qgis-user] QGIS bypass user permission

2021-04-21 Thread Raffaele Ceretto
Good morning, I created 2 users on my database. one admin and one read-only. The read-only one still allows me to edit and delete. I get the message "this user does not have the permissions, contact the administrator of the database", but does the modification anyway. I have tried closing qgis and