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Questions tagged [coordinate-system]

A reference framework consisting of a set of points, lines, and/or surfaces, and a set of rules, used to define the positions of points in space in either two or three dimensions.

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When trying to export a corrected file error Unable to transform GNSS coordinates into the chosen coordinate system [on hold]

1 input file(s) read. 413 position(s) read. A total of 18 feature(s) read or created. 18 point feature(s) read. Unable to transform GNSS coordinates into the chosen coordinate system.
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1answer
17 views

How to transform a shapefile with a MN03 (LV03) coordinate system into a shapefile with a MN95 (LV95) coordinate system?

Switzerland is currently introducing new coordinates: by the end of 2016, all federal and cantonal reference data (e.g. the Swiss cadastral system) sould be transformed to the new highly-accurate LV95 ...
3
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1answer
43 views

Importing from CSV and changing projection using ArcPy?

I'm attempting to convert CSV files to a group of shapefiles, then re-project them to a different coordinate system. The first conversion works, but I'm having issues with the projection piece. ...
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1answer
36 views

Accounting for orientation for a UAV image

I have a series of images that were taken with MicaSense RedEdge sensor attached to a UAV. My final goal is to input these images into mapping software (ArcMap, ENVI or QGIS) and be able to do stuff ...
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1answer
37 views

Warp a shapefile from transverse Mercator to Lambert projection

I'm quite a newbie in QGIS. I imported in QGIS a shapefile of a European country (as well as a TIFF representing the contour). These files are referenced in EPGS 3035. I would like to transform a ...
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1answer
30 views

QGIS3 shows coordinate in geographic coordinates though QGIS project and layer are both in projected CRS

The CRS of the data I am using is in geographic CRS (WGS 84 EPSG:4326), but I want to work in projected CRS which for my case is in UTM 32N, EPSG 25832. I am working on modifying polygons with the ...
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1answer
35 views

Projecting shapefile of point geometries?

I am trying to creating a point shapefile that lies within polygon(a feature layer). By creating point geometry objects and filtering the ones that fall within the polygon(feature layer), I created a ...
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10 views

Converting CORDEX NetCDF climate data coordinates for GIS [on hold]

It's my first time having to work with NetCDF files. I need to use them in ArcGIS or QIS. My problem is that I can't manage to project the file into something I can use in GIS (like WGS84 or ETRS89). ...
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29 views

Rendering roads given a little bounding box

I have to render a small map (50-200 meter of radius given a GPS coordinate) to an image. I'm using mapnik on Python. Currently, my approach is to download directly from OpenStreetMap the needed .osm ...
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0answers
52 views

Convert coordinates with Proj4Leaflet from EPSG:25832 to leaflet 3857

I have a wmts server, and try to add this tiles to leaflet with proj4leaflet. My code is here //this one is fine var main = L.tileLayer( 'http://****&zoom={z}&x={x}&y={y}',...
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67 views

Finding correct CRS using QGIS?

I have a GeoTIFF layer (downloaded from US Dept of Interior) that is US population density. The metadata claims it is in EPSG:4267, which isn't even intended for use in that part of the world. (east ...
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2answers
69 views

GPS waypoints are giving me different coordinates once transformed into proper coordinate system?

I recently went and collected some waypoints with a GPS that is in NAD27 UTM16N. After uploading the GPX file into QGIS, I saved it as an ESRI shapefile, and changed the CRS from WGS84 to NAD27 UTM16N....
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1answer
33 views

Extract coordinate data from KML path

I have a route defined by a series of waypoints - how can i extract as many coordinates as possible from that route as possible? I need to extract about 100-150 coordinates that lie along a route ...
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1answer
19 views

Creating Buffer around series of lines in R?

For a GIS class I'm taking I'm trying to create some spatial statistics for a route through a city. I need to create a buffer of 100m around the route. It looks like i can use gbuffer from rgdal but ...
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30 views

What key points defines a GIS? [closed]

I realise this looks like a very simple uneducated question from the title, but I am drawing up guidelines for 'what makes something a GIS' and I am wanting to check with the community that I have not ...
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35 views

Google Earth Engine exported tif file is unprojected (or strange coordinate system?)

Just starting to learn Google Earth Engine. Sorry if this is covered elsewhere but I couldn't find a tutorial or post about it. I'm doing a pretty simple image export, but when I load the TIFF into ...
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1answer
34 views

Add point markers in QGIS 3.4 without coordinates

I am new to QGIS and trying to insert svg markers into a map I've been creating. I am struggling to find resources on my exact problem. I read about creating a new georeferenced shapefile and layering ...
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1answer
19 views

LongestFlowpath error

I get this error every time I try to get the longest flowpath. It says that the spatial reference is not set for the input(s), yet all layers in my table of contents are set in the same spatial ...
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0answers
54 views

ArcGIS vs QGIS vs PostGIS projection issue

Windows 10, ArcGIS Pro, QGIS 2.18, pgAdmin 4-postgreSQL I have two (sample area) PostGIS tables in a PostgreSQL database: building_polys (SRID: 27700) -OS MastermapTopo address_points (SRID: 4258) -...
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1answer
30 views

Creating buffers around locations when using a Geographic Coordinate System

Background I am trying to make students familiarize with some some basic GIS procedures (using QGIS 2.18), like creating simple maps featuring points that represent the location of shops in a given ...
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0answers
9 views

Extracting site location from original MODIS sinusoidal projection from Google Earth Engine?

I'm currently trying to find a way to extract site location data from Google Earth Engine for several MODIS products in its original projection (sinusoidal). Yet I have not managed to receive the ...
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1answer
44 views

How to display world map raster in World Robinson projection in QGIS without the corners being repeated?

I am using QGIS version 3.2.3-Bonn on Windows 10. I have downloaded the global physical map raster from Natural Earth link. This is in WGS84, and I wish to project it as World Robinson (EPSG: ...
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1answer
33 views

GDALWARP cuts off right edge of image?

I'm reprojecting GFS GRIB files to EPSG:3857 using gdalwarp. Resulting file get little bit shorter to the right so when I zoom in from zoom level 5 and higher, I can see vertical line with missing ...
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0answers
11 views

Imported .shp files will not load correctly in Android app MapIT

I am able to import .shp files created with ArcMap, but the features do not appear on my map. When I zoom to them I am taken to the North Pole. I assume this is a projection issue. MapIT has a much ...
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2answers
96 views

Producing offset after georeferencing Soviet topographical military maps from printed control point coordinates in QGIS

I have 'acquired' a collection of scans of (previously top-secret) Soviet-era military topographical maps at a set of 1:25.000. I want to georeference a set of these scans. I know the coordinate ...
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0answers
5 views

Trying to run functions with adjusted TIGER and Census data but there are now datum conflicts?

I am trying to create maps that display the intersection between elevation and population, and elevation and housing costs using TIGER and Census data. However, when trying to get the census and TIGER ...
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2answers
56 views

Hammer projection in GDAL

I am working on Ubuntu 18.04 with PROJ 4.9.3 and GDAL 2.2.3 (installed from the ubuntu-gis PPA). In a previous question on Hammer's projection in QGIS it was concluded that with older PROJ versions ...
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1answer
8 views

NodeJS Geometry string from GPS coordinates before sending to DB?

I'm building an application that saves geographical data to the postgresql db with postgis extension. The data I'm saving is in EPSG 4326 WGS84 format, so I'm sending lat/lng coordinates to the ...
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1answer
44 views

Over calculation of area- How do I calculate correct acreage when there are stacked parcels?

I am currently interning for a county in the United States. I am working on the data and mapping needed to fulfill the Open Space Activity of CRS. Stacked parcels are causing me a massive headache. ...
0
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1answer
27 views

Moving/Reprojecting raster to a different central meridian?

I have a raster set to 0-360E projected using WGS:1984. When I modify the Data Frame Properties GCSWGS1984 to a custom meridian of 180, the raster does not move. The polygon of the continent moved ...
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0answers
25 views

Vector reprojected to the same projection in different GIS are not aligned

I have a vector file from the land use area around a river in South America. It was mapped originally in Datum SIRGAS2000 and Projection UTM, zone 23S - EPSG:31983. As the area of study is much ...
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0answers
24 views

Create custom projection for Shapefile, given specific target coordinates [duplicate]

I have a somewhat odd situtaion. A client has provided me with a Shapefile that has no projection information, along with an image of the map that it corresponds to. I have run some coordinates ...
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22 views

Fishnet programmed in python does not display correctly in ArcMap but displayed correctly in QGIS

I programmed a fishnet in python to use as a reference map for georeferencing. I am facing the following issue: The fishnet is not displayed correctly in ArcMap 10.5.1. The fishnet has parameters lat-...
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1answer
35 views

NAD 1983 to NAD 1983 CSRS Transformation

I have data in NAD 1983 Zone 20 and want to transform it to NAD 1983 CSRS Zone 20. I found this source: https://community.esri.com/thread/6772 which states: NAD_1983_To_NAD_1983_CSRS_4 > 1950 ...
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2answers
52 views

What projection is used in Argentina cadastral maps from 1901?

I am looking to georeference and digitize the cadastral maps for Argentina from 1901 and I need some help in determining the projection which was used in the creation of this maps. For more detailed ...
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0answers
9 views

Interpretation of digital surface model (DSM) built from s2p tool and XML file

I am new to GIS. I am using s2p stereo pipeline to build Digital Surface Model (DSM.tif) from it. The height of certain point in this DSM.tif is 84 meters, and you can see from the color bar on ...
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0answers
20 views

Choosing EPSG output code?

I am trying to map some data and it is asking for ESPG codes. They are coordinates in Australia and EPSG:4326 seems to work as the EPSG input code. But how do I know what to enter as the output code?...
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1answer
37 views

Using project / layer CRS in QGIS?

I'm using QGIS 3.4.1, and I'm trying to print 61km x 61km area map of somewhere South Korea. Then I need to send this map with west / east latitude and north / south longitude info to other person, ...
2
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1answer
28 views

Handling raster data in a “rotated pole projection” with R?

My question is about using R to transform raster data from a rotated pole projection to a regular latlon grid - and then plotting it. I am working with data from a numerical weather model, which is ...
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1answer
26 views

How to get latitude and longitude for a matrix data using specific projection in R?

I have matrix of temperature data and I would like to get lat and long for this data set in a particular projection e.g. PROJCS["DHDN_3_Degree_Gauss_Zone_3",GEOGCS["GCS_Deutsches_Hauptdreiecksnetz",...
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1answer
42 views

Importing Several Latitude and longitude Points From a Smartphone App into a CSV File

I am using a GPS App on Android that export my location as a latitude and longitude values. For each location it exporting a separate data set: Latitude (LAT): 32.05796 N 32°3'28.6578" Longitude ...
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0answers
7 views

Which impact has the “layer_coordinate_transform_info”-tag in the QGIS-project file

In QGIS there is a persistent bug which causes that the project file gets cluttered with old entrys in the "layer_coordinate_transform_info"-tag of layers which are not present in the project file ...
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1answer
43 views

How to change the unknown coordinate system of a raster data to a known coordinate system

I have a set of raster datasets and have created a raster catalog out of them. These datasets should cover specific vector data. I have just realised that the raster as tif data have a coordinate ...
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1answer
38 views

Displaying two separate Excel files on same map? [closed]

I have started to learn ArcMap. I have two separate Excel files which are: Border coordinates, CSD coordinates. For each Excel files, I have information for longtitude and latitude. My aim is to see ...
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0answers
18 views

How to convert WGS84 coordinates to screen pixel coordinates? [duplicate]

I have a set of points that are defined as WGS84. In ArcMap the featureclass details are: Geographic Coordinate System: GCS_WGS_1984. Datum: D_WGS_1984 Prime Meridian: Greenwich Angular Unit: Degree. ...
0
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1answer
34 views

QGIS 3.4 - Find all layers not using the project CRS

I have a large project and I recently reorganised my data. This included reprojecting some of it. I have updated the data sources for all of my layers however there are some layers which are still ...
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3answers
195 views

How to Identify Coordinate System (CRS) from projection file using Python

I am working on many shapefiles (their corresponding projection files are also presented). Every shapefile has a different Coordinate System, so it becomes difficult to plot these in a generic manner....
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0answers
15 views

Using Yelp API lat/long in Folium — CRS needed?

I understand the default crs for Folium is EPSG3857. I am pulling lat/long data from a yelp query and am not sure if I need to be converting to a GeoSeries and assigning a CRS to the GeoSeries. It ...
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0answers
23 views

Why can't I change my Buffer Map units?

My problem is that my CRS will not change. I have looked at all the other posted questions regarding a similar problem. However hopefully the screen shots provided will indicate my issue. Figure 1 --...
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1answer
23 views

Formulation of CRS (EPSG2438 to EPSG4326) conversion in Excel

I have about 14000 points with coordinates EPSG2438 and want to convert the coordinates into WGS84 (EPSG4326). I want to know that is there a way to make Excel formula to convert these coordinates. In ...