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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87 views

Add xy Data from csv adds data but changes xy values?

I have an issue with adding xy data from csv. files. Data in csv properly formatted (name, x-point,y-point,z-point). After importing them, when I click on Identify it shows location x and y ...
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1answer
114 views

Converting individual x,y coordinates into individual polygons

I am currently struggling to convert x,y coordinates into individual polygons. Feature polygon and points to line is not what I am trying to do. I have sampled vegetative plots on the landscape and ...
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1answer
637 views

Microstation coordinates in Google Earth

I have got this x,y,z values of a cell(point feature) from microstation, I am trying to locate it in Google Earth. This is the location from London UTM zone 30U. I have tried it too. 530563.1906, ...
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3answers
1k views

Converting Coordinate systems [closed]

I have coordinates in *GPS (WGS84) (deg) format and I need convert them to South African Cape/Lo27 format. I know I can do this on this website (https://twcc.fr/en/#), but unfortunately I need to ...
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48 views

Problem at coordinate system

I have one image that I filtered it in MATLAB and finally, I saved it in tiff format from MATLAB. My image is RGB. it has three bands; When I open this image in QGIS, and then go to ‘new print ...
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1answer
295 views

Extract x, y, z of all the nodes / vertices of a single polygon shapefile into a text file

I want to save all the x, y, z coordinates of all the nodes (vertices) of a polygon shapefile to a text file using Python programming in QGIS Python Console. import ogr, os, sys fn = r'E:\Sreeraj\...
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1answer
189 views

Geopandas and significant digits of coords

I trying to put coords of a points GDF in 2 columns. But i'm a little bit surprised by result. In geometry all points have 6 significant digits but in columns only 5 (rounded)... My code to put ...
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1answer
83 views

Crash dump issue while uploading .csv coordinates as vector in QGIS

I am using QGIS 2.18 in Windows. I want to show some coordinates in a map, for which I am uploading a .csv file, but it shows a crash dump every time with error "CRS was not defined". I have ...
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1answer
49 views

Non-geographic grids on maps

There are plenty of maps around, printed and otherwise, with numbered grids that do not directly equate to real-world coordinate systems. Typically these grids will have 0,0 in the bottom-left corner ...
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1answer
424 views

Converting Australian coordinates (EPSG:3112) for mapping in R

I'm trying to map road accidents in Australia, which comes with x and y coordinates (e.g., x = 1328459.1 and y = 1670878 for Adelaide) as well as the following information: PROJECTION LAMBERT UNITS ...
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1answer
755 views

How to get Lat/Long between start and end coordinates and spaced at equal distance?

Suppose I have two GPS points (start and end points) each with lat/lon. I want to get equally spaced GPS points between start and end nodes. That is, I want to find GPS points for example every 10 ...
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1answer
52 views

Importing and converting coordinates to ArcMap and calculating distance between them?

I have a table in excel format with the following two columns: Now, I need to import this table to ArcMap and calculate the distance between the two points for each row and write the calculated ...
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1answer
274 views

Saving individual information from leaflet csv

So my code currently displays markers that are read from a csv file, draw a path between them in order of appearance and animate another marker along the path. What I would like to know how to do, is ...
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0answers
116 views

How can I transform coordiantes to a topocentric system using PROJ.4?

I would like to transform coordinates (e.g. WGS84 or Bejing1954) to a topocentric system. There seem to be several EPSG codes for this (5819, 5820, 5821, 15594, found here or here) but none of them ...
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1answer
441 views

Update MGRS coordinates in Attribute table

How can I update MGRS coordinates in the attribute table of a point feature, when the position of points has been added without using a tool that creates a new feature? I am not using a special ...
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1answer
162 views

Calculating uncertainty for coordinates data?

I have a dataset of species distribution in latitudes and longitudes extracted from geo-tagged photographs. I have plotted them on a map to see how distribution looks like. My attempt was to check ...
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1answer
399 views

Plotting VN-2000 Coordinates?

I was provided the coordinates of a site in Vietnam in VN-2000 grid coordinate, central meridian: 108 15 zone: 3 degrees, ellipsiod: WGS84 Plotting the WGS84 coordinates (see attached image) in ...
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1answer
354 views

Fetch lat lon from eachLayer that uses coordinates

fairly new to leaflet and such and have been experimenting with a little project. Essentially I have a csv file with latlng information and a function in the code that reads it and places markers ...
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1answer
348 views

How to update coordinates by values in columns?

I try to make a script which changes the coordinates given in format DMS (like N54 24 04.50, E018 34 17.20 to 18.6889, 54.3320) to DD format which is suitable for working in QGIS. The conversion is ...
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211 views

Moving polyline to another location in ArcGIS Desktop?

In desktop ArcGIS 10.3, I have this polyline with xy center coordinate of it is: 18157037.6 / 65108911.9 When I zoom out (1:5000000) the map, in order to grab the polyline into the right location, ...
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2answers
89 views

tool to output xy from an input xy, distant, and angle [closed]

I want to build a tool where you provide coordinates, distance, and angle for input and it outputs coordinates, no feature necessary, using the distance and angle from the input coordinates. How do ...
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0answers
251 views

Using OSTN15 to convert British National Grid data to KML

I'm trying to save 2D data on a layer (currently to British National Grid co-ordinates) to an accurate KML version using QGIS 2.14.19 Essen. Saving directly to KML using the WGS84 CRS doesn't give an ...
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0answers
319 views

Standard Method to calculate Average Moving Speed from Times & Coords?

...I wasn't sure if this question was best suited to GIS, SO or Math, so after reading GIS Topics I decided to ask here, but I'll relocate if necessary... :-) I'm working on automating various ...
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1answer
754 views

Convert Lat/Lon sexagesimal degrees to UTM coordinates

I'm using proj4.js to convert geographic coordinates (degrees, minutes and seconds) to UTM coordinates (ETRS89 Zone 30). When I get my coordinates result of the transformation I'm checking them with ...
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1answer
210 views

Reprojecting coordinates using MakePoint() with SpatiaLite?

In my SpataLite-DB, I've got a table holding coordinates in EPSG:2056, splitted in two columns "x_coord" and "y_coord". I want to copy them into another table, using MakePoint to convert the two ...
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3answers
139 views

How do I import Excel coordinates with letters into ArcMap?

I have an Excel document with lots of coordinates in the following format: lat: 2.03° S lon: 80.00° W Is it possible to import this data directly into ArcMap or do I have forcefully to transform it ...
3
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1answer
551 views

Set Grid Composer Unit in UTM for QGIS 2.18.14

I was very confused with my QGIS 2.18.14, i'm pretty sure that i used correct coordinate system, WGS84/UTM 48N, and the coordinate also said so. But why when i set the grid. The grid coordinate is ...
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0answers
514 views

Moving raster layer using QGIS

I'm a user of QGIS with a very precarious understanding of it, and I've been looking for a way to move a couple of raster layers that have no coordinates and have been given some default ones placed ...
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0answers
75 views

API to get water body names by coordinates

We have some geometry records - water bodies in a DB which does have name. I have tried to use Google Geocoding to extract them but it seems that it is more suitable for addresses. Is there any API to ...
3
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1answer
226 views

Checking if vector coordinates are inside raster file using pyqgis?

I have some tifs files inside a folder and want to check if a shape coordinates are inside one of the tifs with pyqgis. I tried this from Determining coordinates of corners of raster layer using ...
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2answers
902 views

CRS of layers and google areal base map in QGIS 2.18- Error

I try to load layer of population in U.S.A on base map of google earth satellite. this this part of the attribute table: My problem is that the point located in worng place: I tried to change the ...
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2answers
102 views

How to recalculate coordinates in QGIS?

í´ve moved several Points from my Survey file. Now i want to recalculate the new coordinates of those moved Points. And then Export it to Excel. Does anybody have a quick answer?
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1answer
1k views

Fast way to get all points as integer of a LineString in shapely?

So I have a shapely LineString: print np.round(shapely_intersecting_lines.coords).astype(np.int) >>> array([[ 1520, -1140], [ 1412, -973]]) I want to get all the points in ...
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0answers
49 views

How to extract list of XY coordinates found within a polygon?

I have multiple polygon shapes covering the UK. How can I create an Excel spreadsheet of all 6 (sometimes 7) figure XY British National Grid northings/eastings that fall within these polygons? I don'...
4
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1answer
2k views

Finding correct X Y values from two pairs of X Y map coordinates?

I am working on trying to get values for a specific latitude and longitude from a netcdf3 file with Python. The model uses X and Y coordinates and an LCC projection. The netcdf file comes with a set ...
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0answers
4k views

Creating waypoint coordinates on a grid within an area

Do you know which GIS software or online tool supports returning GPS coordinates on a grid within an area? Kinda like waypoints for drone photographing 90 degrees looking down of an area for 3d ...
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1answer
62 views

Determining errors in latitude and longitude? [closed]

I have a large database that contains at grade railroad crossings (railroad crossings that intersect roadways). Many of these contain incorrect latitude and longitude values. I need to determine which ...
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1answer
86 views

Get my x, y, z position as 0,0,0

I have a set of data in the column geometry(geom) as WKB. I am using ST_AsGeoJSON(ST_Transform(geom, 32633)) to transform WKB into meters. my results are like this: {"type":"LineString","...
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1answer
322 views

Georeferencing Museum specimens with poor locality descriptions

I am currently collating a list of specimens from databases of various natural history museums for further research. However, a well known issue associated with majority of historical data is the lack ...
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0answers
192 views

Is there a way to retrieve shapefile attribute table information for a given coordinate in R?

Does anyone have an idea how could one get information out of shapefile attribute table (class SpatialPolygonsDataFrame in R), in my case data from column that contains species names, based on a list ...
2
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1answer
317 views

CSV matrix of coordinates to Raster in QGIS

Is it possible to create a raster in QGIS from a CSV file that is a “matrix of coordinates” without transforming it into a vector? I explain: My data is a matrix of 5500 columns and 175 rows, it is ...
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1answer
109 views

Issue adding correct coordinates to map

I've been trying to add correct coordinates to my grid in GIS. I have a map of the Iberian Peninsula using an Open source layer from OSM/Stamen (CRS: EPSG:3857. WGS 84 Pseudo Mercator) and while in ...
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1answer
550 views

Grid Won't Show in QGIS?

I have this local map that'd I'm trying to add a grid with decimal points. The internal grid won't show, also when I add the zebra frame the white parts only appear in the corners (as tiny squares). I ...
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2answers
45 views

Identifying a co-ordinate system that works in UK?

I have some data from an old system that contains co-ordinates which I wish to use but I'm unable to establish what sort of co-ordinates they are. They come from the South East region of the UK. For ...
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1answer
656 views

Converting xy coordinates in ITRF2000 to long lat WGS84 [closed]

How can I convert the x y coordinates which are in ITRF2000 coordinate system to long lat WGS84?
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1answer
97 views

Determine Los Angeles neighborhoods based on coordinates

I'm new to the GIS world. I've read several sites and previous posts but couldn't find a satisfactory answer. I have a data set of ~400k coordinates from Los Angeles and would now like to determine ...
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1answer
953 views

Converting Northings/Eastings to Longitude/Latitude using R issue with Northern Ireland?

I have found a lot of questions about conversions of Northings/Eastings to Longitude/Latitude in R. I have been working with this tutorial from Alex Singleton which is really useful in explaining the ...
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0answers
617 views

Offsetting polygons by meters with clipper

I would like to create buffered polygons of locations (towns, villages etc) in order to use them for searching in radius. This is what I would like to achieve (units for ilustration): This is how I ...
4
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2answers
6k views

How to convert latitude and longitude to x y coordinates (in meters)

I had an excel spreadsheet that included latitude and longitude coordinates for a series of points. I created a shapefile in QGIS from this data and selected the correct CRS (NAD83 / Massachusetts ...
6
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1answer
4k views

Add distance to a latitude or longitude

Say I have a latitude of 38.802610 and a longitude of -116.419389 and I want to be able to add a distance to that, 20 miles for example. So far I have came up with a rough idea on how I would do this:...