All Questions

I am looking to find the nearest neighbor between two point tables in postgis and return the ids of both along with the line geometry. I have been able to determine the distance for the nearest ...

When should I use GeoSpatial data in HDFS and when in HBase? Seem that for HDFS I should use ESRI Geometry and Hive Spatial, and for HBase use GeoMesa? Sample query we require - For a defined polygon (...

Thanks to a previous post, I was able to solve a long-standing problem by creating a geometry, using a SQL-query with PostGIS. However, I want to use the created geometry in QGIS and have problems ...

The data for this example can be found here: https://github.com/davidbaniadam/maps So I am creating this plot: But I want to keep the actual size of the small island. How can I do that? I have also ...

I created labels for a set of 10 cities in Alaska, adjusted their position & added masks. I saved & closed, then reopened a few minutes later and the labels have disappeared. I tried ...

I have an image collection and a geometry ROI var ROI = ee.Geometry.Rectangle(-78.20688664502586, 34.67650023609108, -77.65207707471336, 35.216816430066366); var l5 = ee.ImageCollection("LANDSAT/...

I have a layer with a number of polygons. I can happily adjust the opacity of the polygons using the normal slider, but when I add labels to the polygons from the Attributes table the labels do not ...

I'm new to QGIS and stuck with this task. Here's the data I'm working with: 1-square-kilometer grid Shapefile of Germany (https://www.zensus2011.de/SharedDocs/Downloads/DE/Shapefile/Inspire.zip?...

I am attempting to calculate the area of water bodies in my classified map. GEE tutorials showed me a method (https://code.earthengine.google.com/b24cfb66585792b77f6336a8722d1081), however I ...

I have 2 numpy arrays (same dimension) which I would like to use to create a TIF raster file with 2 attributes. I'm trying to do so with rasterio with the following piece of code: out_meta = ..... ...

I am trying to segment a raster image to get a vector output. I am using OTB 6.6.1 in QGIS 3.4. In the segmentation window, I selected the input raster which is a 3 band (true colour) sentinel 2 image ...

I'm a complete newbie in PostGIS - I tried to solve a problem I had in QGIS (see this older post). Basically, I just need to know how the correct syntax works to use the function ...

To import data into a PostgreSQL/PostGIS database I need this CSV format: "1,nameOfPoint,0101000020E6100000689DA690152F114090338CFF9B0B4A40,2019-07-22 19:56:03.603+00,2019-07-22 19:56:04.243+00" ...

I am trying to use the Overpass Python API to find the all footways from OpenStreetMaps within a given bounding box. This is my first time using this API and am quite unsure how to write this query. ...

I'm trying to delete a Picture Element from 45 MXDs. This code is a start for me: import arcpy from arcpy import env env.workspace = r"G:\PROJECTS\landuse\gis" for mxdname in arcpy.ListFiles("*.mxd")...

I have created tiles via Qtiles plugin in QGIS. Here is the code snippet I have so far: QString url = "file:///C:/Users/USER/Desktop/TiledMap/{z}/{x}/{y}.png"; QgsRasterLayer * lyr = new ...

I am trying to translate coordinates in C# so that I can do Geo lookup with Google Maps API. For example: [-344093.68,16850640.41] should come out to [-112.82816072375947,46.109509005723744] But ...

I'm trying to create DEM based on TIN from points layer that I have. this is how the layer looks like- when I try to use the TIN interpolation tool I fill it like that and I use the layer extent- as ...

In reclassify dem, the system doesn't accept my number of classes and itself classify in 9 classes. What should I do?

I'd like to create a shapefile with ArcGIS of the map attached below. Published in an econ paper, the map divides the territory of the German Union (post 1815) in 19 states (more precision can be ...

I need to change parameters (Input Transparent Color) from layers in GeoServer. I have a lot of images to do it. So, I need to do this edit using GeoServer REST API. I did the code below but it doesn'...

I am new to using ArcGIS Pro and I have a problem regarding deleting some elements from my legend. More exactly, I have classified some pixel values in different categories, and some of these ...

I have a code that analyze NDVI for any shapfile and then compute the mean and the standard deviation for each image. My goal is to be able to do more calculation with the statistics I have calculated,...

I am trying to solve the split delivery vehicle routing problem using ArcGIS desktop. I first tried splitting the orders into very small quantities like 20. Before splitting, my original orders were ...

I have one shapefile of agriculture plots that looks like this- I want to run analysis in google earth engine but for each plot. Is there any way to run this analysis without saving each plot and ...

I am trying to make a map like this: https://docs.qgis.org/testing/en/docs/gentle_gis_introduction/coordinate_reference_systems.html#figure-robinson-projection I have downloaded a shapefile with ...

I need to create dichotomic fields based on a single field which shows multiple choice answers in the form of strings separated by a space. What I want to do is this: The number of choices that will ...

I'm working with multiple raster images, each in the Albers Equal Area Conic projection: one of the mainland US, one of Alaska, and one of Hawaii. I'd like to translate the Hawaii layer to be closer ...

Here's the problem: http://www.doctorharapos.com/webMap/geotiff.html My GeoTIFF files are light, just 4MB My process: starting from an ASCII Esri file I transform it to GeoTIFF using gdalwarp, ...

I have a set of pixels that follow a straight line. However, the values aren't all clearly visible. I want to create a Line Feature that I can later use to identify it. I have created a Lon Lat ...

I'm using QGIS to merge DEM tiles (.hgt files) for Hawaii and Alaska. This process seems to be much more time-consuming than when I previously did this for the mainland US states (I don't have an ...

Is there a way we can calculate or when rotating polygons, actualize/update our "Angle" field in the attribute table by using Python? There is a tool in ArcGIS "calculate Polygon Main Angle" but is ...

I am using point.in.polygon function in sf package to determine whether a set of data fall within a polygon or not. Here is a snippet of the data and polygon visualization As the figure shows, there ...

I would like to use the orfeo-toolbox via the QGIS Python Console, however, I don't seem to be able to import the otbApplication. I keep getting the following error: import otbApplication Traceback (...

I am trying to do a decision tree classification in Google Earth Engine. The decision tree function has a treestring as argument. Can somebody explain me what is that?

I am working with Openlayers to consume WMS from GeoServer. I have loaded multiple layers and get attributes for one layer using getGetFeatureInfoUrl. But this approach gets attributes for the ...

I am trying to plot my Raster Data on tkinter canvas using the following code: import tkinter from matplotlib.backends.backend_tkagg import ( FigureCanvasTkAgg, NavigationToolbar2Tk) # Implement ...

To predict quantiles for random forest I used quantregForest function easily and then I used predict function to get predictions for each quantile, and I did not have any problem. How can I do the ...

I have a Sql Server Store in Geoserver. I want to create Attribute-based sld. I used Persian characters in Literal tag. Like this: <se:FeatureTypeStyle> <se:Rule> <se:Name>...

Oftentimes, when I see maps of the US rendered online, they use a custom version of the Albers projection, like so: Alaska and Hawaii are off to the side, nicely arranged. I'd like to replicate this ...

I have an attribute field that contains strings like "iuyluf45567kjyyr347fklj". All strings contain various amount of characters and digits (there is no clear pattern) but each string contains 2 ...

I have a series of Cartojs 4 dataviews, but I want to manually get the data instead to listening to the 'dataChanged' event (when multiple datasets are created, this end in multiple errors). I tried ...

Can someone link to the best maps of North American forest cover and average temperature available in 2019 that can be imported into QGIS? I'm trying to find the link on NASA's website for what they'...

I've been trying to set up Windows GeoServer version 2.15.2 through the binary installation, and am getting the following error when trying to access the admin interface HTTP ERROR 503 Problem ...

I aim to create output (solar map) every 15 minutes for the whole day and because I am not quite sure how it works, I wanted to validate the sum of radiation: I have created first output with 0.25h ...

I had a layer of points of trajectory and I wanted to create a map of the average speed of the movement. I have a column of speed in the table of points. I created a big base raster coverage. Then, I ...

If you select in QGIS: View, Decorations, North arrow, then a window pops up with some parameters regarding the north arrow. One of these parameters is Angle. If you select automatic, then the angle ...

I am trying to project specific route paths that all have coordinate points under a single column. Each row represents a different route path. Some of them go on for more than 100 coordinate points so ...

I have two geodatabases with rasters containing information about "treecover" and "loss". The file names are slightly different but can be matched based on the last 8 characters (the coordinates of ...

I have a pandas dataframe, what I wish to join to 3 different feature classes in an ESRI geodatabase. I need to open up the GDB, join the dataframe to each of the feature classes, one at a time, ...