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Questions tagged [xyz]

In a planar coordinate system, three coordinates that locate a point by its distance from an origin (0,0,0) where three orthogonal axes cross. Usually, the x-coordinate is measured along the east–west axis, the y-coordinate is measured along the north–south axis, and the z-coordinate measures height or elevation.

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Converting xyz data in txt format to .xyz format?

I have read many forums about converting xyz data from txt format to .xyz format. I extracted xyz data from shapefile using exporting data from attribute table in ArcGIS Desktop, then save it as .txt ...
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QGIS - 3D data set with stacked points at different elevations, is it possible to create data points at each elevation

I have a 3D dataset consisting of xyz and property. The data points are along vertical axis (boreholes), and at different XY locations (at other borehole location). The data points are not all at the ...
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Adding points to a gridded XYZ

I have a gridded xyz file that I got from gdal_translate on a tiff file, it's 65,536 points from a 256 x 256 .tif file. I have interpolated another x column of points to make it a 257 x 256 .tif ...
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40 views

Plotting XYZ in ArcMap?

I have UTM coordinates data XY and Z which shows the presence of mountain. For Z, I have just binary data. 1 = presence of mountains, and 0 = absence of mountains (presence of sediments in other ...
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1answer
64 views

Print XYZ Layer Using Geoserver, Mapfish, GeoExt

How can I get base layers added to an OpenLayers map using the OpenLayers.Layer.XYZ method to print in MapFish/GeoServer? The Geoserver/Mapfish print service is not printing any of my XYZ base layers ...
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QGis 3.4.4 xyz-dependend height length calculation

We use $length to display the length of our lines. The outputs are only xy calculated We need to calculate with the height reference system DHHN 92 to get the true xyz lengths. How do I set up the ...
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1answer
125 views

Mismatch between OpenLayers 5 and XYZ-layer on some zoom-levels

I have an image pyramid that I created with gdal2tiles. Then I displayed this layer on top of another map in OpenLayers 5 with the XYZ source. On the map zoom levels 0-8 the XYZ layer is not aligning ...
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Convert Z/X/Y tile coordinate to WMTS

I would like to add a WMTS tile endpoint to Mapbox-GL-JS, which only supports "XYZ" or TMS tiling schemes. According to what I understand of the WMTS specification the two seem to have the same zoom ...
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Extract nodes X Y Z from lines

In QGis 2.18.3 The Vector -> Geometry Tools -> Extract Nodes tool will generate a point layer shapefile with points at each vertex of each line. But each point in layer does not have the z ...
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45 views

Trying to interpolate depth measurements of a pond

We have taken depth measurements across a pond, and have a CSV file with each location's GPS coordinates and depth in meters. We are trying to create a map of this pond showing where the channel is ...
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35 views

Shapefiles and attributes from ArcGIS Pro missing in ArcMap?

I have data that is a series of digitised polylines that due to issues with maintaining the Z component have been exported (from another software package) as XYZ points in .csv format. Using ArcGIS ...
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2answers
174 views

Convert XYZ coordinates in .txt files to .tif files?

I have many .txt files containing UTM XYZ coordinates of my study area. The content of each .txt file looks like this: 493932.0669,5426301.1910,0.468 497932.0669,5426301.1910,0.421 501932.0669,...
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1answer
253 views

XYZ bathymetry to Raster?

I have some XYZ bathymetry data in an irregular, non north-up pattern -- i.e. not gridded. It is saved as a CSV file. 443564.526,6636541.778,-105.47 443564.526,6636538.778,-105.44 443567.526,6636544....
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1answer
182 views

Reprojecting XYZ coordinates in Python whilst keeping Z coordinate constant

When doing a reprojection from a projected coordinate system (e.g. EPSG:28992) to a geographic coordinate system (e.g. EPSG:4326), the Z coordinate gets an offset of 45 meters. The Z coordinates of ...
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3answers
313 views

Directly generate XYZ tiles from GeoJSON?

I would like to directly generate XYZ (=raster) tiles from a ~20 GB large GeoJSON file. This is way too much for QGIS Tiler. As another trick I've generated vector MBTiles from the GeoJSON, but sadly ...
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285 views

How to convert UTM projected map to slippy map tilenames

I work with a map of Paris in ETRS89 / UTM zone 31N projection (EPSG:25831) and need to write slippy map tiles in filenames like /z/x/y.png. I made a custom python script to read the QGIS project ...
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QGIS - Average a DEM into a single, flat plane

I have a XYZ point cloud that I am interpolating into a DEM. The data represents a surface that is relatively flat. I am hoping to be able to create a DEM of a single flat plane that best represents ...
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1answer
64 views

QGIS switch of coordinate system?

I want to know if it is possible to switch of the coordinate system in QGIS, because I want to use my own values like x,y,z (the results is a 3D-model and the x,y,z axis is represented in cm, so I do ...
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91 views

Importing EarthVision ASCII to ArcGIS Desktop?

How do I import a surface map from Petrel in EarthVision ASCII Format to ArcGIS? I have a file from surface map in Petrel that I want to export to ArcGIS Desktop. I used the tools 3D ASCII to ...
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2answers
226 views

Load XYZ point data with UTM coordinates with included zone attribute in x-values?

Given a XYZ file with following structure for elevation values (3rd column), x-coordinate (1st column) and y-coordinate (2nd column) for UTM zone 32 N (EPSG:25832): 32496000.00 5764000.00 121.26 ...
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1answer
754 views

Converting LiDAR .las to .xyz with LAStools outputs incorrect projected coordinates?

I have an application that can import terrain data in an XYZ text format where X = latitude, Y = longitude and Z = elevation. I am trying to convert a LiDAR .las file to this format using las2las. ...
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Getting the area of a polygon from Google Earth or .xyz digital elevation model INCLUDING area due to topography

I'm doing some analysis for a study on geomorphology. For this I'm comparing the 'bumpiness' of lava fields to the 'bumpiness' of the surroundings. What I'm trying to do for this is measure the ratio ...
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OpenLayers2, trouble with XYZ layer bounds

I have folder with image at server: ex: /folder/zoomlevel(z)/id/x-y.png I added it by the OpenLayer.Layer.XYZ with my getURL() function: getUrl: function(bounds) { var xyz = this.getXYZ(bounds); ...
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1answer
5k views

Converting text files to .xyz files [closed]

I need to import data on WAsP software but I am finding problems to convert the data I got from an official website to a file readable by WAsP. in summary I have a file like this: -39.0250 -6....
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1answer
134 views

Importing point cloud data to Terrascan is incorrectly gridding it?

I am using Terrascan to strip vegetation of some ASCII files to create a bare earth model and also to convert the ASCII txt file into a *las (1.2) file. However, I have noticed that Terrascan (at ...
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1answer
296 views

XYZ FILES can't process Using Potree

I try to process XYZ Files In Potree but it not works But when i try .las file it work prefectly fine My commands line arguments ./PotreeConverter.exe C:/wamp64/www/PotreeConverter2/...
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197 views

Reprojecting xyz rgb file in QGIS?

I am trying to reproject an XYZ RGB point cloud file that I got from a drone mapping software. It is now in WGS84 and I want it in euref32(UTM) or just a local metric system so i can import it Into an ...
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1answer
76 views

GeoTiff to z only (no x&y) in QGIS?

I am searching for a way to convert the european DEM (EU-DEM https://www.eea.europa.eu/data-and-maps/data/eu-dem#tab-european-data) to (xy)z. In fact I'd only like to obtain the z-data (elevation). ...
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1answer
171 views

Converting point cloud (.txt) to shapefile with ArcPy? [duplicate]

I have lots of .txt files (point cloud) which are raw data acquired from from LIDAR and containing XYZI values. I want to convert them to shapefile. Is there a way I can do that instead of adding XY ...
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64 views

Z value rounded by ArcGIS while executing “Add XY coordinates”

I have a large vectorda (point) dataset in ArcGIS Desktop 10.3.1 File Geodatabase that consists of 1,2 billion points that I created, converting it from ASCII file by "ASCII 3D to Feature Class tool". ...
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1answer
207 views

Merge XYZ tilesets with different origins

So I have hit a snag. I wish to merge multiple XYZ tile sets together. Meaning I have multiple directories which contain tiles in the format /zoom/x/y.png. I tried just copy and pasting them in to ...
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1answer
76 views

In which coordinates (x, y, z) are vertical grids expressed?

When working with 2D maps, coordinates are always expressed in X and Y. Adding a 3rd dimension also adds the Z-coordinate, which typically stands for height. However, when working with vertical ...
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0answers
176 views

gdal_translate outfile without nodata_values [closed]

I want to use gdal_translate to convert a ASCII grid file onto a xyz file. But the ASCII grid is about 5.7Go and the xyz outfile is really bigger (approximately 30Go). To reduce the memory I would ...
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1answer
381 views

Converting part of raster into .xyz file

I have a very large raster whose GDAL Info is as below: Size is 172800, 67200 Coordinate System is: GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]...
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2answers
1k views

Latitude Longtitude to X, Y, Z coordinate system using python

does anyone know how to go about converting lat, long, alt to x, y, z where you have an origin for x/y coordinate (specific place in London)? In other words, I have a lat long and alt data and would ...
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1answer
2k views

Contour lines (*.shp) into XYZ

I downloaded a TIFF image from USGS Earth Explorer from which I determined the contour lines and saved them in a shapefile (see tutorial http://www.qgistutorials.com/en/docs/working_with_terrain.html)....
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1answer
1k views

Importing XYZ ASCII Grid Data Into QGIS: Why does GDAL resize the raster?

Question: Why does GDAL import of XYZ gridded data in QGIS modify the dimensions of a raster and can this be avoided? I'm importing XYZ ASCII gridded data that conforms to GDAL XYZ Gridded Data ...
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270 views

How to get elevation data from XYZ source in Openlayers 3?

I have an XYZ file. For each pair of latitude and longitude values, there is an elevation value in meters in the file. How do I get those elevation values in Openlayers 3? Basically, my map will ...
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2answers
5k views

Extracting elevation data from DEM files using QGIS [duplicate]

I know how to generate contour lines from a DEM file once the file is loaded in QGIS and I also know how to open the attribute table for the contour lines which show elevation against IDs. Is there a ...
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0answers
160 views

Missing 'Z' component from points extracted from polyline in QGIS

I have polylines which were created with XYZ coordinates and after extracting the points (nodes) I want to export these to a .csv file with their XYZ coordinates. When I try the 'save as' function and ...
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1answer
3k views

Generating a series of cross sections (profiles) along a line?

I have a set of points (xyz) along an axis. Is there any way in QGIS to generate cross profiles along this axis each 10 meters with for example +-15 meters right and left from the axis?
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1answer
6k views

Convert huge XYZ CSV to GeoTIFF

I have a huge amount of data in the form of CSV containing UTM coordinates as X and Y and an elevation value as Z information. I need to convert these data into a DEM as GeoTIFF for further analysis. ...
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0answers
500 views

Convert folder of XYZ png tiles to TMS Tiles [closed]

I have elevation/terrain tiles downloaded from https://s3.amazonaws.com/elevation-tiles-prod/terrarium/{z}/{x}/{y}.png I need to convert them to TMS Tiles. Is there a python script that can do the ...
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3answers
847 views

Can ArcGIS Desktop create LAS (or lasd) files from ASCII data?

I have many ASCII files containing LiDAR xyz values. In order to create an ArcGIS LASD file, I need to convert these ASCII files into las files. I can do this with FME or LAStools, but I can't see a ...
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2answers
336 views

Where does “Add XY Coordinates” tool get data from?

I am using the ArcGIS Add XY Coordinates tool to populate XYZ values in a shapefile after converting .las data to .shp using LAS to Multipoint tool. Does the Add XY Coordinates tool get the location ...
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1answer
386 views

Generating XYZ tiles in nodejs

I'm looking to create XYZ tiles for use in leafletjs with nodejs. Previously I've been creating my tiles using this python library (gdal2tiles). I was wondering if anyone had yet written a nodejs ...
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1answer
307 views

How to convert GEOJSON file to XYZ tiles

I have a shape defined in GEOJSON file. As it's quite huge, I would like to convert it to XYZ tiles. Is there a utility, which can create XYZ pyramid for me at once?
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1answer
7k views

Converting .tif to XYZ in QGIS? [closed]

How can I convert a .tif DEM to XYZ format using QGIS?
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1answer
359 views

Convertion of a .dem file to coordinates and elevation

I have a .dem-file with elevation data of an area and I am looking to programmatically convert this data to coordinates and elevation in C++. After a lot of searching, it looks like GDALTranslate ...
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0answers
1k views

Display multiple ASCII (xyz) files in QGIS

I am new to QGIS and I am trying to import more than 700 xyz (it is the same as ASCII?) files into the map so I can get a digital elevation model and then get the average elevation for some small ...