All Questions

0
votes
0answers
6 views

Specifying Decimal Places For X and Y

My boss requested that when I calculate geometry (decimal degrees -- PCS NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet) X has 8 decimal places and Y to have 9 decimal places. I'm adding 2 fields ...
0
votes
0answers
6 views

School boundaries [duplicate]

I have seen this post which seems to be the closest to my need. When I download the docs, either I have no ways to filter the document or I don't see all schools. I have been trying for a week now. ...
0
votes
0answers
4 views

ArcGIS Mapserver Layer via pyqgis with dynamic layer properties

Is there any possibility to add esri mapserver layers to qgis with dynamic layer properties such as transparency,etc. iface.addRasterLayer("url='https://sampleserver6.arcgisonline.com/arcgis/rest/...
0
votes
0answers
7 views

Python Scripting in QGIS - add features and select them

I'm trying to migrate a python plugin I wrote from QGIS 2.18 to QGIS 3.4. In the plugin, I'm creating new vector features and eventually adding them to an existing vector layer. My wish is to have the ...
0
votes
0answers
13 views

Loop all the raster files in the same folder? [on hold]

I'm trying to calculate mean of rasters NDVI for the same years. I have 10 rasters. How can I loop all the raster files in the same folder to calculate mean and add to dataframe? The following code ...
1
vote
0answers
8 views

What are the possible values of iconSize (Leaflet Marker Icon Options)

I have a very standard script: var redIcon = L.icon({ iconUrl: '1.png', iconSize: [10, 10], // size of the icon iconAnchor: [5, 5], // point of the icon which will correspond ...
0
votes
0answers
8 views

Mosaic to new raster execution

Mosaic to new raster execution is successful, but the layer does not show in layers but is in documents which have an error message as "Invalid raster dataset failed to create raster layer"
0
votes
0answers
9 views

Choropleth map using D3.js

I want to build a Choropleth map, from a specific region (in my case Portugal) with D3.JS and while searching for tutorials and support, I have found this website. Following the proceedure, I have ...
0
votes
0answers
8 views

How to make Qt designer form annotations show up in print composer

Firstly, I am a QGIS novice, and even less so with QT Designer. I was able to figure out how to use QT Designer to make a QGIS Form Annotation. It sync's well with my data, but I have a problem with ...
0
votes
0answers
6 views

How do I UPDATE (not grow) polyline as car moves - Google Maps? [on hold]

I tried Googling my problem but could only find solutions showing how to add points and grow polyline as vehicle moves. But I wish to UPDATE the polyline (i,e grow or reduce) I am implementing a ...
0
votes
0answers
10 views

Google Earth point to polygon

I had marked the points in Google Earth. I wanted to create polygon feature by using the point as centroid is there any way I can do that or else need to digitize the polygons?
0
votes
0answers
13 views

Removing white background from raster as well as cleaning up edges

I am looking to remove white background from a tiff as well as cleaning up the edges. I have used display background values from the symbology tab as well as applying gamma stretch for edges.. I can ...
1
vote
0answers
17 views

QGIS (2.18) Processing post-execution script hook to clear scratch layers?

I've been cobbling together some Processing scripts for QGIS 2.18 (I'm not a fan of QGIS 3 scripts), and I keep running into one particular problem: my script creates a lot of scratch layers and they ...
0
votes
0answers
20 views

Place names have disappeared from Google Earth Pro?

Since I allowed NBN to take control of my internet no information apart from basic aerial photographs appears on Google Earth Pro. Is this related to the inability of iinet to provide what they ...
0
votes
1answer
25 views

How to get equidistant points from a linestring (geographical coordinates) [on hold]

I want to resample geographical coordinates based on a specific number of values, let's say, 1663 for the following case: -78.0599088 -11.89402416 -78.04317744 -11.88622134 -78.0267798 -11.87700462 -...
0
votes
0answers
11 views

how i can modify axis y in python 3 [on hold]

i have dataframe in csv i need to plot timeseries ( Date , mean ) this is my script : from pandas import Series import matplotlib.pyplot as plt from matplotlib import pyplot ...
1
vote
0answers
12 views

Is there a program to read all the data contained in a waypoint in a .gpx track file and assign it to a variable?

This is related to geodata. I am a plant explorer and go into Ecuador and Peru looking for new species of plants. I take close to 1000 pictures each time I go, and I use a Garmin Oregon GPS device ...
1
vote
0answers
11 views

Does Ionic Offer Mapbox Navigation?

Is Mapbox Navigation compatible with Ionic? I can only find SDK for both Android & iOs but nothing on cross platform technologies. https://www.mapbox.com/navigation-sdk/
0
votes
1answer
26 views

QGIS both layers are in same CRS but in a different place

I'm facing a problem with QGIS and have no clue what I'm doing wrong here. I've tried everything I know of. I have polygon layer in CRS 2180. I add another layer that should be overlapping perfectly -...
0
votes
2answers
17 views

Using ArcPy with ArcMap Layout View to ExportToTiff with geotags?

I feel like this should be a lot easier than it is, all I am trying to do is create a geotiff that contains spatial referencing from arcmap in an automated manner as I have thousands to create. ...
0
votes
0answers
9 views

Display ArcGIS Online Hosted Feature Layer in Google Earth Pro?

Disclaimer: I am much less familiar with network/server/sharing nuances (much more experienced with desktop work). I work for a nonprofit and am trying to map out where work is done. I have a large ...
1
vote
0answers
19 views

How to fix transportation network connectivity problem? [on hold]

I am using network analysis in ArcGIS to conduct a health-related analysis of limited resource country. the quality of the road network layer is not high, with many connectivity problems between the ...
-3
votes
0answers
14 views

Why can"t I create strings? [on hold]

Using Visual Studio Express 2017 Windows 10 HP Envy 27 Cannot build string of literal and nonliteral Dim's (Same problem with String.Join) Build string of literal values Dim a As String ...
0
votes
0answers
7 views

ValueError: expected array of dim 2

I'm trying to crop a GeoTiff file with spesific coordinates. I tried to implement many methods (gdal_translate, gdal_warp). The best approach I had was with the following codes. But I'm having a ...
0
votes
0answers
11 views

How to reduce a custom bin histogram for a region in Google Earth Engine?

I'd like to reduce all the conties' data histogram with a custom bin, but what I got is a auto bin histogram, it seems ee.Reducer.fixedHistogram() can help, but I don't know how to pass the parameters(...
0
votes
0answers
13 views

Load GeoJSON generate from MySQL with PHP

I need help with creating the code in the Leaflet to load GeoJSON using the PHP script. I tested the echo from PHP at http://geojsonlint.com/ and GeoJSON is showing it correctly has a good structure.
0
votes
0answers
16 views

Trying to figure out ArcGIS API's `mapScale` variable and how it maps to OpenStreetMap's zoom level

I'm using ArcGIS' /export endpoint to get an .svg of a few map layers given a specific bounding box. However, when I apply the .svg as an image overlay to OpenStreetMap's world map using Leaflet, the ...
3
votes
0answers
34 views

Shapefile polygon operation efficiency

I would like to make a graph from a shapefile, where edges would express spatial relations between polygons according to DE-9IM For that, I use fiona + shapely My code is working but it is extremely ...
0
votes
1answer
22 views

Animating layer in OpenLayers4

Is there a way to include animate properties of a vector layer (GeoJSON)? var highlightStyle = new ol.style.Style({ stroke: new ol.style.Stroke({ color: '#fff', width: 1 }), ...
2
votes
0answers
25 views

Using ogr2ogr on Anaconda

I am building a Choropleth map in D3.JS. In order to do that, I have downloaded a map from Eurostat. From the GeoJSON file, I want to extract the country for the visualization, in my case Portugal. ...
-1
votes
0answers
7 views

Generating Printable Maps with Extent based on Scale using ArcMap? [on hold]

I'm new to printing maps with ArcMap and beginner in GIS as a whole, my intention is to print maps based on a given extent/polygon or area of interest using the same scale across. My problems are: ...
1
vote
1answer
36 views

QGIS - selecting through one-to-many relationship

I'm trying to make a species distribution project where I can select a species from a non-spatial list of species and the selection would highlight (select) all the counties to which the species has ...
0
votes
0answers
9 views

Turn all raster in folder with rasterio and rasteriomask

I have 10 rasters in same folder and I need to mask all rasters with same shapefile using rasterio and rasteriomask This script works just for one raster (1 band) : import rasterio import rasterio....
0
votes
0answers
6 views

PyQGIS - Print Layout Items. setExtent() and attemptResize()

I'm trying to arrange some map items onto a print layout. Let's start with the map item itself. Here is my code to add a map item to the print layout. Specifically I have questions about the ...
0
votes
0answers
15 views

Openlayers4 ol.layer.Group only gets first item

I am trying to change the opacity of vector layers using one slider but I seem not to get the right logic to loop each item as opposed to just the first. Here is my code so far. Link to full code ...
0
votes
1answer
34 views

Downloading map tiles/image from website

There are two Norwegian websites that have satellite imagery I need, https://kart.finn.no/ or https://www.norgeskart.no . Is it possible to save a certain area when zoomed out so the scale is 200m, ...
0
votes
0answers
7 views

Having trouble with small scale proj4 definition

I'm working on a photogrammetry project. However, the issue I'm having is putting the models in the same point in space for comparison in GIS. My current thinking is that I can make a custom ...
0
votes
0answers
35 views

Sampling shapefiles without replacement using R?

I have many road shape files with road segment ID and corresponding mean value in them.I want a dataframe of sampled shape files without replacement. For each road segment from 1 to 534, I need to ...
0
votes
1answer
14 views

From Overpass Turbo to GeoJSON without map

I would like to extract boundaries of some areas from Overpass Turbo in GeoJSON format. At the moment I am using the website UI www.overpass-turbo.eu, write the query, execute it and export in GeoJSON ...
0
votes
0answers
12 views

How to retrieve GIS data in Multiple Orthophoto at point level

I have been using a python script that can read Data from Orthophoto(*.tiff) of size 300Mb-2Gb. But this is taking 32s per request of lat-long, which is not ok. I have different Orthophotos with ...
0
votes
1answer
28 views

Which datum transformation should I use when projecting from 4326 to 53008 in ArcMap?

I have a polygon shapefile which is on WGS84 and I want to re-project it on EPSG:53008 (World Sinusoidal). When I'm trying to do it either by 'Save as' or by 'Data management tool - Project" it says ...
0
votes
0answers
22 views

Creating Semivariogram from Satellite Image

I need to create a semi-variogram/a few semi-variograms for a satellite image that is about 20 square km in size. The satellite image is RapidEye imagery (Planet Labs) and it contains about 21 million ...
4
votes
1answer
53 views

QGIS3: displaying (or filtering) features in one layer based on features selected in another

I have points in a layer "Site-Centroids". I generate a lot of isochrones (polygons) around them, into "Isochrone_Site-Centroids". With all the isochrones displayed, the map is too busy. What I ...
0
votes
0answers
5 views

2018 USGS US Topo Render Differently in Browsers

While opening in a browser a 2018 Geospatial PDF from the USGS, I noticed that different PDF browsers open the same file differently. I'm looking for a clue as to why they are different. Compare ...
0
votes
0answers
3 views

Reducing images to list and array size mismatch

I want to convert a google earth image to a numpy array and use Google Earth Engine's Reducer.toList operation. But the size of array I get is different than the size of image as I see in image ...
1
vote
0answers
10 views

2018 USGS Geospatial PDF produces `ERROR 1: insufficient arguments for Marked Content`

Issue When processing the 2018 Geospatial PDFs from the nationalMap.gov an error occurs that was not seen when processing the same quadrangle from 2015. I should note: there is no problem with ...
1
vote
1answer
25 views

QGIS 3 Scale Bar Should Print at 1" But Does Not

In QGIS 3.4, I am using the Print Layout to print some UTM lines with scale bars. My goal is to make a PDF of a map that is at 1:63360 or 1 inch to the mile. When I print the PDF, the mile Scale Bar ...
2
votes
1answer
22 views

How to hide certain views from ArcCatalog?

I have users that connect to an enterprise geodatabase via OS authentication. They use a couple of methods: An .SDE connection in ArcMap A ODBC connection for MS Office The users need to be able to ...
0
votes
1answer
46 views

Scraping List of Zip codes?

Methodology from basic Basic Level for the whole process. I need a list of zip codes. This is the map: https://eligibility.sc.egov.usda.gov/eligibility/welcomeAction.do?pageAction=sfp If we drill in, ...
1
vote
1answer
31 views

How to calculate TilesOrigin for WebGeoCache in OpenLayers

I'm using OpenLayers 5.2 to display tiles from Geoserver 2.14 with GeoWebCache. For the GeoWebCache to work it is required to define tiled=true and tilesorigin parameters in the WMS requests. How to ...

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