Geographic Information Systems Questions, Problems & Solutions : TransWikia.com ~ Page 96

How to get QGIS to make 3D mesh (triangles or quads) from points with 3D coordinates?

I have random added points with height.GeoJSON looks like this:{"type": "FeatureCollection","name": "randompoint_Zadded","crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },"features": [{ "type": "Feature", "properties": { "rand_point_id": 0,...

Asked on 08/07/2021 by j2l2

0 answer

How to obtain timestamp and user id from .osm file in PostGIS enabled Postgres database

At present, osm2pgsql seems toignore the timestamp and user id of the elements, a serious drawbackfor some applications. According to abug report this...

Asked on 08/07/2021 by RobinLovelace

3 answer

Vector line layer classification with two functions in QGIS

I have a linear geometry layer with the attribute: "uuid_przys". I would like to classify my layer with the uuid-attribute, but only for the objects in the current map view...

Asked on 08/06/2021 by jukuka

1 answer

Calculating the area of oyster drone imagery

I'm working on analyzing the area of an oyster reef and its development over the past years. The shown ortophoto is already loaded in QGIS. The unit of this file...

Asked on 08/06/2021 by Lennart

0 answer

How to create two layers with different criteria from a raster layer

I have one raster layer I also turned into a slope layer. I need to create two rasters with different criteria ( first one needs specific slope and elevation, second...

Asked on 08/06/2021 by Shyann Young

0 answer

Using GeoPandas to generate shapefile from GeoJSON for opening in ArcGIS Pro

I got from an API a layer of parcels in format GeoJSON, just like the file in this .ziphttps://www.dropbox.com/s/5eqi8bbqt6ej6lc/json_data.rar?dl=0I need to convert this to a shapefile that...

Asked on 08/06/2021 by Cyberguille

0 answer

Map generation using MapProxy & Openlayer

I am new to openlayer 5 & mapproxy & I am trying to generate map using MapProxy 1.12 & openlayers5. I am using ubuntu 16.04 & have created virtual environment...

Asked on 08/06/2021

0 answer

GeoServer styling line feature with border in conjunction

I've used SLD to style two type of roads with the border in GeoServer. How can I remove the border of a road when another road or street connects to...

Asked on 08/06/2021

1 answer

How determine optimal epsilon value in meters for DBSCAN by plotting KNN elbow

Before doing DBSCAN I need to find optimal epsilon value, all the points are geographical coordinates, I need the epsilon value in meters before convert it to radians to apply...

Asked on 08/06/2021 by Javier Alejandro Rendon Carril

0 answer

Filtering LiDAR data with las2las by scan angle range?

I am using las2las to filter .las data and I would like to filter the data between a scan angle of -15:+15; however the algorithm tells me the following: ?error...

Asked on 08/06/2021

1 answer

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