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Questions tagged [coordinates]

Any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed references.

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Seeking New York Neighborhoods Boundaries?

I need a source of New York neighborhoods boundaries coordinates, I need to draw polygons around them just like this page is doing to Wingate, Brooklyn. https://www.exrny.com/listings/121719/2-bed-in-...
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18 views

Converting Point Feature to Latitude/Longitude Coordinate and GPX?

I drew a point feature using the draw tool in ArcMap on a map in an area of interest. I am now interested in extracting the actual latitude/longitude of this point in geographic space so I can ...
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Separate interstate and non-interstate roads from a given route

I have direction steps from city A to city B (obtained from Google Directions API). I need to differentiate the interstate road distances from non-interstate distances in the route. Google ...
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2answers
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QGIS: How to store the GPS coordinates in the attribute table? [duplicate]

I got vector points on a map. I already have the elevation information in the table for each vector point and the point-id. Now I want to get the GPS coordinates for each point stored in this ...
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1answer
46 views

Excel co-ordinate file to polygon shapefile

So I am making a map of fishing intensity. Currently, I have an excel table with the mid-latitude and mid-longitude for each of my intensity data points. I also have the c squared value for each point ...
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Transform coordinate from rotated lat/lon to normal lat/lon WGS84

I have acces to an OPeNDAP service that allows me to peek into a humongous ocean wave dataset. It takes latitude and longitude as inputs (in fact even a range of the two) - but the coordinate system ...
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Generate a GPX file that matches a road network from an imported drawing

I'm looking for a tool that'll help create a GPX file which will help me run a track and create "GPS Art" or "GPS Drawing". I would like to draw simple shapes, like animals or texts by following a ...
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1answer
40 views

Separating points with identical coordinates using ArcPy?

I need to move apart points with identical coordinates. I have a point layer where there can be as high as 4 points on each other (same coordinate). I want to separate these points from each other (...
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Manually edit shapefile coordinates (polygon) QGIS 3

In the QGIS2.18 version I was used to see the point editor table when I would be in editing mode and have clicked a point. A list would appear, with all the points in the selected polygon and their x ...
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How to get the Lat/Lon coordinates if I am given a table of the MINxy and MAXxy, so that I can map it out in ArcMap?

Right now I have a table that looks a little like this: and I have the geographic coordinate system they were mapped in, but I need to display them as the polygons that they are in ArcMap.
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Getting authentic and verified current location of user?

I am building an application that needs a user to send his current location. However, since GPS signals can be faked. I need the user current location to be authentic and verified. I thought of ...
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1answer
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Determining WSEN of desired geographic area?

I'm looking to create a map of Afghanistan and I am in the middle of resampling binary geographic data into topojson format. The trouble is that my research of WSEN borders has returned nothing and I ...
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Convert MSL to WGS height

I need to find the coordinates for a given location in WGS coordinates. This mean geodetic latitude, longitude, and altitude (with respect to the reference ellipsoid). I was informed the coordinates, ...
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1answer
39 views

Obtain pixel coordinates of an image

I'm working with a tiff image in arcgis projected in UTM 33N and I need to obtain pixel coordinates of a specific point in the image with known metric coords (UTM 33N). How can I get them?
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2answers
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How are satellite images mapped to terrain coordinates so precisely?

Many geoinformation systems have both satellite images and terrain features (houses, roads, etc) with coordinates. So they can show terrain features drawn over the satellite image or they can display ...
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1answer
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Converting local coordinates to UTM 36N by control points in QGIS?

Our project is generating local excavation data from a local grid which we eventually want to transform from the local coordinates to real world coordinates. In this case we want to convert/translate ...
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34 views

Adding old FID to new feature class using ArcMap?

I have been tasked to relocate some assets, about 1000 preexisting point and line feature classes. I will be collecting the correct GPS coordinates to realign all the assets but I'm not sure how to ...
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Need to convert coord_dimension from 4 to 2. File contains 2D polygons

I am working with PostGIS Bundle 2.5 in PostgreSQL 11. I loaded a MultiPolygon file from a geodatbase and I need to append the geometry table to an existing geometry table. However, the coordinate ...
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1answer
103 views

Extract longitude and latitude from object in shapefile

I'm new to GIS and (ESRI) shapefile. I would like to extract GPS-Coordinates or longitude and latitude from every object in a shapefile, mainly from polygons. Here is a picture with one of these ...
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63 views

Converting data from parliamentary constituency code/county code to a mappable format?

I have a spreadsheet detailing fuel poverty in the UK, against a) individual parliamentary constituencies b) county and c) local authority. This can be found here if anyone needs to look: https://www....
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1answer
36 views

Displaying bounding box polygon from CSV using ArcGIS Desktop?

I have a data file (.csv) with a minimum and maximum longitude and latitude. These 4 fields (roughly a few thousand rows) make up a bounding box. However, I am unsure of how to get this data to be ...
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37 views

How do I extract coordinates for a line

I have a set of 35 lines that I need to collect the exact coordinate string for in the format txt. I would like to export the coordinate from every vertex the lines are built up by, and I would like ...
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49 views

Map Coordinates have negative values

I have created a map in QGIS with 4 vector layers with the CRS of (EPSG:28356, GDA94 / MGA zone 56) The map is of the Robina area on the gold coast Australia. I have added map coordinates and the ...
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21 views

Esri grid raster to GPS coordinates

I have a digital terrain model and a digital surface model which contain data in an Esri grid. The data in this files looks like this ncols 1251 nrows 1001 xllcorner 742499.5 yllcorner 328999.5 ...
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1answer
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Get some sample coordinates inside an area using its KML file [closed]

I have a KML file which defines an area. I want to get coordinates of some points inside that area using my KML file. I googled a lot, but I only found codes to check if a point is inside. My issue ...
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ISO 3166-1 alpha-2 Country and region location in coordinates

I am doing some mapping that requires country and region average coordinates. I've found this very useful table with the coordinates of countries, their ISO 3166-1 alpha-2 code and the average ...
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1answer
81 views

How to truncate coordinates (LonLat) to decimal precision - OpenLayers 2

For eg. if coordinates are 17.12345678, -82.12345678, And I want to convert them to 3 decimal digits Expected result: 17.123, -82.123 Is there any API in OpenLayers 2 to truncate coordinates (...
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1answer
35 views

Drawing a marker on a shapefile with the given latitude and longitude?

I am using shapefiles to draw a custom map. They were created successfully with the help of ArcGIS Desktop. Now I need to draw a marker on shapefile based on an existing tuple of lat, lng. How can I ...
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2answers
508 views

Getting longitude/latitude coordinates from Addresses?

I got a CSV file with more than 15000 address, and I need to show them on a map of the South-West of France. I've found the MMQGIS plugin on QGIS, but it does so without the right SCR. Do you have ...
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1answer
42 views

How do you turn coordinates vertical in Map composer?

When using map composer in QGIS, there is the option to `Draw coordinates'. once selected, the coordinates are situated in the horizontal position (as seen below). Does anyone know how to align the ...
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1answer
72 views

Interpreting cell coordinates from DEM?

I'm using Environment Agency DTM LiDAR data which I import into Mathematica in ASCII format to produce ground surface models, sections, etc. The process works fine, but I'm unclear whether the cell ...
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1answer
49 views

Changing the coordinate value of a Pointz object with python

How can I change the X,Y or Z value of a Pointz feature with python in QGIS? I am trying to change the Z values of Pointz with a python plugin. I am first trying to pass the selected feature to a ...
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3answers
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QGIS: list of coordinates to polygon [duplicate]

In the course of a monitoring exercise for small scale farmers, we captured the coordinates of fields using a GPS tracking in the SurveyCTO app. We used automatic capturing of the coordinates every 5 ...
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1answer
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Resampling raster to even coordinates (no decimals) using ArcGIS Desktop? [duplicate]

I am resampling a raster from one CRS to another, and from 0.5 m resolution to 10 m. But I want the new cells to have even coordinate extents, instead the old coordinate decimals remain. How do I fix ...
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1answer
82 views

What coordinate format are these coordinates in?

I am looking at some old data, and I encountered a data point with a latitude and longitude coordinates in a format that I'm not familiar with. I tried researching some other formats and tried ...
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Python Helmert Transformation parameter and residual handling [closed]

I'm looking for some starting points to implement an algorithm to calculate Helmert Transformation parameters (4- and/or 7-parameter). I found already some basic implementation e.g. https://github.com/...
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1answer
301 views

Defining CRS for objects in Kyrgyzstan

We are currently working on two cities in the South of Kyrgyzstan (Aydarken and Kadamjay). They are visible on the map screenshot below (purple dot). For reference, the grid is Lat/Long WGS84 (DD). ...
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1answer
51 views

Changing coordinates of shapefile using ArcGIS Desktop?

I have a shapefile that has meters as coordinates, and these do not reference world datums or projections. Is there a way to assign completely new coordinates to the shapefile so that they align ...
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1answer
40 views

Coordinates are not displayed only attribute table

I am new to QGIS and I have uploaded a second set of coordinates as a delimited text layer. I followed all the steps and the coordinates are in the same format as a previously loaded layer, but the ...
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1answer
140 views

Geopandas - Import CSV: make polygons from X,Y Coordinates based on ID

I'm working on a script, where I want to import a CSV file with coordinates and an ID which should be used to make a polygon shapefile from those. CSV file looks like this (example): ID, X, Y 10,15....
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2answers
73 views

How to make the coordinates of point appears as labels?

I am working on a school project that requires us to have a map with the points indicating different station with its coordinates appearing as a label. I just don't know how to do it? I think it ...
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1answer
52 views

Problem entering coordinates

I am trying to import coordinates in QGIS but they only appear as single line in the delimited text file. What am I doing wrong?
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35 views

How to use coordinates search bar in QGIS?

When using coordinates search bar in QGIS, it sends me to a completely different location. The GPS coordinates style is 37.381096, 14.561191 and the project is set to EPSG: 3857 with OpenLayers ...
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2answers
362 views

Reverse Geocoding in QGIS

I have a point shapefile with Latitude and Longitude attributes with more than 1000 features. I want to add street address data in the shapefile by Reverse Geocoding but the Geocoding plugin has no ...
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1answer
51 views

Export central coordinates of current map in print layout

I am trying to export the centrum coordinates of the current map in the print layout, and show the coordinates as a text element. I have succeeded to print the centrum coordinates of a geometry in ...
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1answer
46 views

Extracting point data with PyQGIS? [closed]

How to extract x,y,z values from a point/node in PyQGIS? I am working on QGIS 3.
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1answer
33 views

Making UPDATE for coordinate does not return the same value

Being totally new with PostGIS, I am trying to UPDATE one of my column on my table. The column itself is called 'center_point' with type of GEOGRAPHY(Point,4326) UPDATE cities SET center_point = ...
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How to find coordinates of a triangle with azimuth?

I am just starting out in GIS and it's been a long time since I took math in university. I am teaching myself through a textbook but there are a few questions I am stumped on. Essentially I have a ...
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1answer
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Two different CRS somehow works? [duplicate]

I am overlaying some WGS84 (EPSG:4326) coordinates over a few DEM rasters with EPSG:102710 (NAD_1983_STATEPLANE_NEW_HAMPSHIRE_FIPS_2800_FEET) When they are these two different layer CRS the ...
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1answer
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Extra attribute is embedded into KML file after conversion

I converted point shapefile into KML which has two columns, one is Name of School and second is Coordinates. "Coordinates" column has only 10 rows. And in the "Name of School" column, there are 30 ...