Questions tagged [epsg]
107 questions
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PostGIS Shapefile Projections (SRID) results in wrong coordinates
I could really use some direction here. I'm fairly new to PostGIS, and I'm coming up with nothing in my search for answers.
I'm pulling in various shapefiles with several different projections (EPSG/SRID). I extract the GEOGCS from the .prj file,…
Ian
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- 2
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how to convert epsg:6991 israeli grid to epsg:4326 wgs 84 python
i got data frame with columns ["x","y"].
"x" and "y" are coordinates for epsg:6991 israeli grid
for example i like to convert x=[212513], y=[617119] coordinates,
to: epsg:4326 wgs 84
x=[35°7'2.734"] , y=[31°38'56.771"]
how can i convert Between the…
matan
- 451
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contextily making weird background maps
This is my code:
import pandas as pd
import geoplot as gplt
import geopandas as gpd
import geoplot.crs as gcrs
import contextily
df = pd.read_csv('dataframe_master.csv', index_col='id')
crs = {'init': 'epsg:4326'}
geometry = [geometry.Point(xy)…
Josie
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- 1
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Reprojection of .tiff file using gdal
I need to re-project a .tiff file from EPSG:4326 - WGS 84 - Geographic to EPSG: 32638 (UTM Zone 38N). When I run the code below the output file is a re-projected .tiff half the size of the original one.
# Reprojection
from osgeo import…
ecd
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0
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Why sf::st_transform returns empty geometries when applied on a df with sf column (POINT)?
I am trying to st_transform sf-points (CRS: 4326, degree based) in a dataframe to a local metric projection (EPSG:23867, DGN95 / UTM zone 47N).
So I have a dataframe "waypoints" with all my attributes aswell as lon / lat as columns. I create an sf…
stefgr
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- 8
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How to find minimum longitude of coordinate system?
I have to write a function in Python which takes list of coordinates and a coordinate reference system (as EPSG code). It should return True if the coordinates are valid in the coordinate system, or False if not. How can I do that?
My idea was to…
Gosia_S
- 11
- 1
0
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1 answer
open layers6: reproject epsg 28992 to epsg 4326
I want to reproject my local-geoJson file in epsg:28992 to the OSM EPSG:4326 in OpenLayers.
I have the feeling I am close to the solution but I don't know what the next step is. I've tried and looked for multiple examples here at SO but I've the…
ThomasHaarlem
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1 answer
Swift - Coordinate Transformation from EPSG:4326 to 3857
I would like to know a Swift library or method that I can use to convert from 4326 to 3857. I have referred some libraries such as Proj4Swift and Proj.4, but to no avail. The first link does not has a workable download and the second does not has a…
Curiosity
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Is there any automatic way to discover epsg code and proj4 to geojson file in openlayers?
I have a project to load some geojson files and then plot then in a openlayers map. I was doing fine with a sample file from Blumenau/Santa Catarina/Brazil (city/state/country) but when I uploaded new files from Brazil cities, they seen displaced in…
tfm
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Error using geopandas to_crs epsg "no columns showing"
I have this code and I run it and it's all good but when I use.head() no raw in columns showing and the rest of the codes didn't run because the raws are emputy..
this is the code
import geopandas as gpd
import json
import numpy as np
from…
Maram Mubarak
- 323
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- 3
- 11
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2 answers
Openlayers/GeoServer WFS caching, tiles or any optimization
I'm developping a Web application using OpenLayers 3.20.0 with layers coming from GeoServer, linked to an Oracle data source.
This application is using mostly ImageWMS layer, and also a Vector layer for interaction and edition.
The issue is that the…
JCB
- 99
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- 11
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1 answer
Openlayers not re-projecting WMS queries
I have an openlayers map in my project and I wanted to add WMS tiles to it. This is my code :
const map = new ol.Map({
layers: [
new ol.layer.Tile({
name: 'wmstiles',
source: new ol.source.TileWMS({
url:…
Qrom
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1 answer
Retrieving raster data by geographic location using Landsat and PostGIS
The project I am working on requires that I retrieve Landsat raster data at specific geographic (lon/lat) locations. After sifting through some tutorials and experimenting with GDAL, PostGIS, and QGIS, I successfully imported a GeoTIFF Landsat…
Evan McCoy
- 115
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- 8
0
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0 answers
GPX tracks to RGF93 in d3.js
I'm implementing a 3D surface with inserted GPX tracks as described in this blog: http://blog.mastermaps.com/2013/11/showing-gps-tracks-in-3d-with-threejs.html
My 3D map is a custom one made with QGIS using RGF93 projection, and I can't achieve to…
markusand
- 235
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Identify coordinate system point
I need to find the "normal" latitude and longitude of a point in this format:
POINT (-8114244 4999772)
I tried using DBGeography.CreateFromPoint, but i think i used the wrong srid.
(i have searched before asking the question, but being numbers…
Geo Hristodol
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