0
votes
0answers
3 views

Strava Metro users, please help understand these values!

Glasgow city provides its Strava user's stats created 2013 (link below). The CSV file contains all the expected columns including, "AMCOMMUTEN" "PMCOMMETN" "BIKECNTN" and so on. However, when we look ...
0
votes
0answers
2 views

How to create a new datum transformation within the ArcGIS REST API?

I'm trying to get a new (EPSG) datum transformation parameter added to the ArcGIS REST API so that I can then get a WKID code for use in ArcGIS Online applications. Does anyone know how to get a new ...
0
votes
0answers
2 views

How to display dynamic text together with date during timelapse?

I'm using time enabled data showing how environmental risks of gas development increases over three scenarios (reference, exploration only, small-scale development, large-scale development) in four ...
0
votes
0answers
5 views

How to find near polygons

I have some polygons with attributes (in my case, some polygons have health establishments) and others without attributes (without health establishments). Is there a function that I can use in order ...
0
votes
0answers
4 views

Convert SpatialPolygonsDF boundaries to SpatialLinesDF keeping information on polygons

I have a SpatialPolygonsDataFrame and I need to convert polygon boundaries into a SpatialLinesDataFrame retaining the attributes of the 2 polygons The structure of the SPDF looks like this 'data....
1
vote
0answers
3 views

ArcScene: Export Multipatch to CAD

I have a 3D multipatch feature class in a file geodatabase using ArcScene 10.4.1. I would like to export this 3D data to CAD using "Export to CAD (Conversion)". The tools runs, but the resulting DWG-...
1
vote
1answer
12 views

Character problem when save map Atlas

I have 45 maps produced with Atlas. I would like to save them with their names. However, there are character in these names that windows doesn't accept in file name. So, I'm tring to do a expression ...
1
vote
1answer
16 views

Smoothing grid of cells

I have a grid of cells that outline sharp transitions between different neighbour values: I would like to "smooth" the transition between the cells so that I obtain some sort of gradients between ...
0
votes
0answers
6 views

What is the index formula to calculate water stress index using multispectral sensor (Red, Blue, Green, Red edge, NIR)?

I am having a multispectral sensor with Red band, Blue band, Green band, Red-edge band and Near-Infrared band. I need to find water stress using these bands, is it possible to find and if yes what ...
0
votes
0answers
15 views

Land cadastre USA

I need to obtain cadastre information for all the USA limited to land terrain only, no urban zone. Is it possible to obtain this information? Does anybody know any services for WFS or SHP download?
0
votes
0answers
11 views

Polylines to raster (Input: Coordinates end point of polylines) using Python [on hold]

I have coordinates of every corner of each polyline. I need to convert the polylines into a raster image using some python code. Polylines drawn can be seen in the attached figure.So, i need to create ...
4
votes
1answer
38 views

Land Use classification and canopy cover using LT8 imagery and ground truth points in QGIS

I am trying to run a land use classification with QGIS on LANDSAT8 imagery to classify the various land uses within an area of northern Vietnam. I want to distinguish between primary forest, secondary ...
1
vote
0answers
13 views

arcpy export data view to jpeg: label size changes [on hold]

I designed a little arcpy script to export different layers in a data view to jpeg (world files included). It's the first time I actually use arcpy but it works. The only drawback is that the labels ...
1
vote
0answers
20 views

How to join a table based on postcodes in QGIS?

I have 2 datasets, a shapefile with postcode polygons and an excel table (.xls) with postcodes and building count. How to represent the excel table in the map? I know that in ArcGIS it's possible to ...
1
vote
1answer
19 views

Add a geometry in sqlite in pyqgis

I'm trying to create a geometry column in a table which I created. I found the following code: cur.execute('SELECT addgeometrycolumn(%s, %s, %s, %s, %s)' %(table_name, geometry_column_name, EPSGcode,...
2
votes
0answers
18 views

NDVI analysis of LANDSAT 8 imagery in QGIS

This is my first question, on this site so please be gentle! I am trying to run an NDVI classification of 2015 multispectral LT8 imagery in QGIS to assess the quality of vegetation cover in regards ...
1
vote
0answers
11 views

Run processing (GRASS) algorithm as administrator

I am trying to use GRASS algorithms in a plugin of mine, in order to improve the quality of a shapefile containing lines that will be used as a graph later. The first algorithm I want to use is the ...
1
vote
1answer
12 views

Add GeoJSON layer to OpenLayers 3.16 from GeoServer

I try to be as simple as possible with my problem. It's just to display a json layer from my Geoserver on a OSM layer with a ol3.16 page. I take the example from this page: http://openlayers.org/en/...
0
votes
0answers
21 views

ArcMap: export each x/y coordinates to a separate row

I am trying to sort out how the coordinates of each point in a multipoint or polyline feature could be exported to a .txt with python so the exported file looks like this: point1_coordinates_x ...
-2
votes
0answers
11 views

Finding downstream Irrigated area for upstream outlet? [on hold]

How can I delineate irrigation area below the outlet point of sub basins, which flow computed in ArcSWAT?
0
votes
0answers
8 views

Geowebcache and Geoserver Layer preview low quality!

I am very new to the Geographic Industry, I have encounter a big problem, the cached layer is on really low quality! Here are the details: Gerserver 2.8.3 Tomcat 7 Java 8 VM We are using GeoTIFF ...
1
vote
1answer
78 views

Can't create polygon in an editable layer in ArcMap 10.3

There is an editable polygon layer in ArcGIS 10.3 I can edit already existing polygons but I can't create new ones. The layer does not appear in the "Create Features" list. I have another polyline ...
-1
votes
0answers
12 views

Call a web service using Gama-Platform ABM

I want to call a web service using Gama-Platform. Is there any built-in support for it? If not, how can I write a custom plugin for this?
1
vote
0answers
7 views

Switch QGIS proxy settings programatically

I am using QGIS at two offices with different proxy-servers. At the moment I have to change the proxy settings manually every time i switch the office. I was wondering if its possible to change the ...
0
votes
0answers
14 views

Choosing a source for elevation data (primarily US) [on hold]

I've found at least two sources for digital elevation data: The National Map and GMTED2010 Elevation Data. More sources are listed here. I was looking into building in support in my app for the JSON ...
0
votes
0answers
10 views

feature info popup [duplicate]

whenI click on the map, feature info popup is displaying empty. Below is my code. Please tell me where Ii am doing the mistake var mapPanel, tree,panel,map,popup, controls; var layers=['xxxxx']; ...
0
votes
1answer
22 views

Calculate average multilinestring point elevation

I'm triying to calculate the average elevation of some multilinestring points. Is there a fastest way than this pgsql function? CREATE OR REPLACE FUNCTION topstation.sig_moyenne_z(ingeom geometry) ...
0
votes
0answers
13 views

Getting DEM data programmatically with libgdal?

I'm writing a specialized tool in C to work with DEM data (typically GeoTIFF files, but one of the reasons I'm using libgdal is to leverage its ability to read multiple formats). I'm able to open a ...
0
votes
0answers
9 views

gdalwarp not clipping VRT to correct extent

I'm trying to clip a projected .vrt raster to an extent expressed in GCS coordinates and it's not doing what I would expect. Here is my command: gdalwarp -te -133.08813624 56.69042536 -132.69405069 ...
0
votes
0answers
11 views

Seeking Tool to Draw Network on Map?

I have a network in adjacency matrix format, and I would like to overlay it on a map of the world, and specify positions for the nodes based upon their actual physical position. What would be a good ...
0
votes
0answers
14 views

Connection Problem

I'm using PostGIS and then I'd like to make a PostGIS connection but I got this problem Connecting: host=localhost port=5432 user=postgres dbname=ASPIRE-PC Database connection failed: FATAL: ...
-5
votes
0answers
22 views

Is there a road map creator out there that does not require to base on real maps? [on hold]

I am trying to create a road map (a map of roads). However, this is not based on a real map (its a Minecraft world). Every map creator out there is based on real maps except this, which is a Metro map ...
0
votes
0answers
10 views

Geoserver CORS Header missing [duplicate]

I'm trying to access Geoserver's WMS GetCapabilities to populate a grid with the available layers and I receive this error : " CORS header 'Access-Control-Allow-Origin' missing " here's my code : ...
0
votes
1answer
20 views

Creating a drop-down list for arcpy script tool

I have written the following script but I cannot manage to create the drop-down list for the variable "select" (select=arcpy.GetParameterAsText(3)). Any suggestions? # Script arguments inputRaster = ...
0
votes
0answers
8 views

OpenLayers-2 marker popup appears in the wrong place

After user types address in search box, the address marker appears in the wrong place. Here's a screenshot showing the popup positioned below the location instead of above it: Code: Could anyone ...
1
vote
0answers
14 views

Extracting pixels with value in one raster but NoData in other raster?

I have two raster A and B, and they are representing the info for Florida. Ideally A and B should have same coverage. However, due to some data processing issue, B's boundary is a bit smaller than A's....
0
votes
0answers
13 views

Change the Shortest Path graph to shapefile

Can I use the shortest path graph from the https://docs.qgis.org/2.6/en/docs/pyqgis_developer_cookbook/network_analysis.html example and make shapefile or a layer? Or is necessary to modify the ...
1
vote
1answer
27 views

QGIS virtual layer path never saved as relative

When I try to use virtual layers in QGIS, I'm unable to use relative paths. I've already set in the "Project Properties", in the tab "General", the "Save paths" as relative. You can see a ...
0
votes
0answers
9 views

Creating values for grid cell and then assigning relief based on the value

I am interested in creating a "relief roughness" value for each cell of a DEM, which will be assigned by an equation, (maximum - minimum elevation per cell)/(half the grid cell length). How can I ...
1
vote
0answers
20 views

Natural Breaks arcpy

Is there any chance I can create a simple python script to classify my data as Natural Breaks? I have only created a script for quantile classification, but it is not enough for my work. arrp = ...
1
vote
0answers
7 views

Mapbox.js Touch Events

Working on a website using mapbox.js and using some custom Leaflet created buttons(var measureBtn = new L.Control.Button(measureOptions).addTo(map);). Pressing this button will toggle it on/off. ...
0
votes
0answers
7 views

GPS course and speed, why are my readings not updating?

I have a GPS module running on an Arduino based device with TinyGPS code. The code worked just fine until I wired up the shields to a car's voltage (all step-downs etc. are fine) by means of a DIN ...
1
vote
0answers
22 views

Generate sequential Unique ID that is a string from current max Unique ID

I am very new to python, and I need some help. I am trying to write a script that will find the current highest Unique ID in the 'FACILITYID' field from our 'Meter' layer. Then, it will need to write ...
1
vote
0answers
15 views

Scroll for qgis custom form

I made form in qt designer for QGIS. But there are a lot of fields in It and It can't placed in screen. I want to add scroll area in my qt designer form but It doesn't work as scroll doesn't appear. ...
2
votes
0answers
11 views

How can I show photos in popup from a ByteA (postgis) in QGIS (or Google Earth/map)

I currently have a postgis database with a table containing point geometry of fire Hydrant. This table contains a raster_blob field which contains the Fire hydrant picture taken by field workers. ...
1
vote
0answers
13 views

ArcMap generated “*.sr.lock” files interrupt Append function

whenever I try to append several shapefile tables in ArcMAP I receive a "read-only" error associated to the recipient file. Several 'sr.lock" files are generated associated to this failure and I ...
1
vote
0answers
9 views

How to update water levels through Midvatten plugin for QGIS

I am using the Midvatten plugin for ArcGIS to plot water levels on a time series graph. I need to update my water levels, but the import water levels does not work for this because the water levels ...
0
votes
0answers
7 views

Referencing DEM tif to MSL using GDAL?

I have a single band DEM tif representing elevation. How can I reference it to a datum and convert it to MSL altitudes? I'm using GDAL command line tool but don't know where to start. I looked at ...
3
votes
0answers
10 views

GDAL pre-allocates raster file

I am using GDAL 2.01 SWIG in C# to create an imagine file. When I call Create it pre-allocates the entire file, so if I am writing a 80GB file it I have to wait for it to allocate the 80GB file ...
2
votes
0answers
13 views

Increase arrow symbol length by value in Arcmap

I use ArcMap to visualize surface displacements. I have a point shapefile with magnitude and angle values, which I plot as simple symbols with size=magnitude and rotation=angle. As symbol I use ...

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