0
votes
0answers
6 views

Add shp attribute data to column with python script

If feature column (feature is the name of the column) in table is ferry crossing in the attribute data then I need to add Yes to the Ferry column that I have already added to the table. If the feature ...
0
votes
1answer
5 views

Leaflet Customer Marker Changes Position with Scale

I am using a customer marker to represent metro stops in my leaflet map. The problem is that the markers are changing their position every time I zoom in or out. When I finally zoom in to the last ...
0
votes
0answers
4 views

What is required for representing a obstracle in AIXM format for aviation

I am trying to figure out what the requirements are for delivering obstacles or obstructions in AIXM for aviation. I currently have all penetrations in a geotiff files from subtracting surfaces that ...
0
votes
1answer
7 views

Arcpy get point feature at start and endpoint of Line feature

I am having trouble getting a feature that is at the start and end point of a line. I can get the start and end point of the line but I am not sure how to grab the Point feature that is at the start ...
0
votes
1answer
4 views

Select related feature among layers

Is it possible in ArcGIS 10.x that if I select a feature in one layer it will also select the related feature in another layer?
0
votes
0answers
6 views

Projecting the Coordinate Systems of layers but one layer doesn't show up with the rest of the layers

I have data from two folders I am working with. Each folder contains shapefiles. The shapefiles in each folder need to have their coordinate systems projected to NAD_1983_UTM_18N. There are 6 ...
1
vote
0answers
7 views

UTFGrid and line features: UTFGrid not consistently triggering mouse events for line features

[Update: My first solution works (notes below), but I'm still interested in responses to the second solution I suggested.] Original Post: Has anyone experienced and resolved difficulties with ...
2
votes
1answer
21 views

ArcPy - Syntax Error when using reclassify tool

I have been writing a code to automate a variety of processes in Arc Toolbox. I have used a line to reclassify before but this time when using it I am coming up with a Parsing Error (SyntaxError). I ...
1
vote
1answer
16 views

Leaflet Map not Visible

I try to make my first Leaflet webmap (I'm very new to JavaScript so please ignore the dirty & repetitive code). I want layer controls and read the Leaflet layer control example but somehow my map ...
0
votes
0answers
9 views

basin creation GRASS vs. flow direction

I have a strange behaviour in QGIS with GRASS tools. I am trying to create basins in the alp region and use he SRTM3 data. As I can see on the flow direction raster the SRTM3 data seems to act nice: ...
2
votes
1answer
24 views

How can I create a line in QGIS from multiples lines?

I have some polylines. The origin of every line is the same and I would like to obtain the geometric centre of all the lines represented by a new polyline which must be the centroid of the lines. How ...
1
vote
1answer
16 views

Hydrologically Correct dem Qgis

How to derive a hydrologically correct dem from point shape file using qgis?
0
votes
0answers
8 views

zoom to all points in arcgis js api

Can anybody tell me what wrong in this code.Here I am passing point geometry to query task. var districtName = $('#ddlDistrictd').val(); function showresults() { $.ajax({ type: "POST", ...
0
votes
1answer
12 views

Prerendered tiles of small area?

I would like to use custom styled tiles for quite a small area. I know there are general solutions like mapnik or mapbox but since I am really only interested in showing tiles for one forrest, is ...
1
vote
0answers
8 views

PostGIS update data with ST_Tile

I need to update tiled raster data from the "whole image". I have created this query: UPDATE data_tiled AS t SET raw_data = f.raw_data FROM ( SELECT data_time, data_type, ST_Tile(raw_data, 250, ...
1
vote
1answer
19 views

installing rtree on windows 64 bits

I am using windows10 64 bits, my os.name is 'nt', I used pip to install but its complaining about the spatialindex_c.dll File ...
2
votes
1answer
34 views

arcpy.da.SearchCursor(fc,[“SHAPE@”]) has no firstPoint object

I am having trouble getting the start and end point of a line using the code below. import arcpy with arcpy.da.SearchCursor("Lines",["Material","SHAPE@"]) as curs: for row in curs: ...
2
votes
0answers
22 views

python script tool validation checkboxes to radio boxes?

I am trying to build a tool in arcmap, which uses radio buttons in its gui. Since I read, that radio buttons are not supported, I figured, it couldn't be too hard changing the behaviour of simple ...
2
votes
0answers
8 views

MMQGIS plugin causes QGIS crash while geocoding

When trying to geocode data with MMQGIS pulgin (Google Maps) the QGIS crashes (not responding). I even tried to divide data into smaller sets but it does not help.
0
votes
0answers
5 views

Adding label in the group animation

Does anyone have experience on adding labels on the group animation in ArcMap 10? I have 10 raster layer in a group layer. I wish to show the raster layer name as a label during the animation. I ...
0
votes
0answers
10 views

Script for running Feature Class To Coverage tool runs into error on arcgis server

I have created a script for converting feature classes to coverage and it runs fine in arcmap. But after publishing and running it on the server, it fails to execute and returns the following error ...
1
vote
1answer
14 views

Opposite of least cost path?

I've established how to run a Least Cost Path analysis in ArcGIS, but I'm wondering if you can run an analysis to find the hardest path between two points?
2
votes
0answers
15 views

Calculating areas outside a point

I have a university assignment that requires me to find an optimum location for a land fill site. There are various parameters I need to map. I have managed to map all the ones within a distance of ...
1
vote
0answers
7 views

MapProxy with WMTS source and reprojection

I am trying to consume Lantmateriet's WMTS source with EPSG:3006 and convert that to iOS TileOverlay compatible (GoogleMaps compatible) tile server. I cannot get it working. Can someone check this out ...
-2
votes
1answer
30 views

How to determine area from polygon?

I have to digitize one polygon that can accommodate 10million.cubic metre of waste and the study area is completely flat surface. How to determine area?
0
votes
0answers
12 views

Calculate average travel time on network

I have 200 points of emergency centers across a national road network, is there a way to calculate the theoretical average response time nationwide just from these two inputs?
0
votes
0answers
8 views

Creating Fence Diagrams from Electromagnetic (EM) Conductance Survey

Has anyone seen fence diagrams created in GIS for Electromagnetic Conductance surveys? I am going to be attempting this soon and have a couple pieces of literature as reference, but they are geared ...
-2
votes
0answers
31 views

How to convert an XML to Shapefile polyline

i want convert this XML file to SHP polyline howe i can do this please ?!!! <?xml version="1.0" encoding="utf-8" standalone="yes"?> <ci nc="BMSKDMA10" nl="BMskDMA10" mt="6" ct="DM" ...
1
vote
0answers
29 views

Where can I purchase private LiDAR data?

I'm looking for privately owned LiDAR data sources. Does anyone know of companies/counties/states that sell their raw LiDAR data? I know there are free LiDAR sources out there, but I'm interested in ...
0
votes
0answers
20 views

(python) distance between a point and a list of segments

I have a line (made of multiple adjacent segments) and a set of points, and I want to find all the points which are within a given distance (40m mainly but could change) from that line. segments ...
1
vote
3answers
31 views

Qgis Shapefile Lines contain no data in Attribute Table

I am trying to make a shapefile line contain all the data that the GPX file has. So i load the gpx file into Qgis, (prompts me for tracks, waypoints, trackpoints, routes, etc) When i choose ...
5
votes
1answer
50 views

How to build a query/expression to select specific points within a buffer? (in QGIS)

I have a point layer in QGIS. Each point represents a tree and each tree has information about its height as an attribute. I would like to build a query/expression to select all those trees that have ...
1
vote
2answers
40 views

IOError: “[u'Hospitals',u'Parcels',u'Roads']” does not exist

I was wondering if someone could help me figure out what's going wrong with my code. It's at the very end of a code that, once a link to a geodatabase is inserted, will print the name, directory, ...
0
votes
0answers
12 views

PostGIS tiger geocoder installation trouble

I am getting the TIGER geocoding feature set up on my windows 7 64 bit box (PostGIS 2.1; Postgres 9.4). I followed the steps outlined here to generate the batch scripts and ran them last night: ...
1
vote
2answers
43 views

Using Python to select records by date field

I am trying to write a python script to select records created within the past 7 hours (date field - database time) using a where-clause within arcpy. The table is ArcSDE database (Microsoft SQL ...
0
votes
0answers
19 views

Spatial index in R - Performance enhancement on geospatial processing [on hold]

In my Geoinformatics studies, I often stumbled over the usage of spatial indices in spatial databases like here. However, I wondered if there is any possibility to use such indices in R in order to ...
3
votes
1answer
23 views

Getting different pixel depths from output raster when done in ArcMap versus Arcpy?

When I use 'Plus' in Spatial Analyst to add together two 8-bit unsigned rasters (pixel values 0-100) the output raster is 8-bit unsigned (pixel values 0-200) but when I try and do the same thing ...
2
votes
0answers
17 views

Location allocation Road Block- Unable to “Solve”

Scratching my head as why I can't figure this out. Software: ArcGIS/ArcMap 10.3.1 with network analyst extension Objective: Perform location-allocation services, based off of 2 Required Facilities ...
2
votes
0answers
12 views

Use Geokettle to Transform file geodatabase data

I would like to use geokettle to transform my file geodatabase data into something else (most likely postgis). Admittedly I am very new to ETL but I am absolutely stumped when I try to define an ...
2
votes
1answer
17 views

Stop snapping from occuring with inserted text?

I'm having trouble with text and scale bars in layout mode on arcgis snapping. I want to move the text freely. It's not necessarily snapping to inserted margins either. I've tried guides and it won't ...
3
votes
1answer
27 views

Vincenty or (Project + Euclidean) for accurate distances

I posted a similar question on stackoverflow, however was directed here for more help. If my main goal was to calculate distances such that my error was minimised to the nearest metre assuming that ...
1
vote
2answers
19 views

How can one retrieve all the raster cell values for Kernel Density output?

This question is related to the replies in this earlier thread (How to interpret GRASS v.kernel results?). I am new to GIS mapping (arcGIS) and have been trying to work with the Kernel Density ...
1
vote
2answers
16 views

Loading data in existing dataset in ArcGIS Online?

In ArcGIS online (AGOL), is it possible to load data (shapefile or geodatabase) into an existing layer? The map layer is shared and editable.
1
vote
0answers
15 views

Why does Floyd-Warshall not return all pairs in my pgrouting SQL?

As a follow up from 1-center and k-center problem / maxmin facility problem in PostGIS I have a strange behavior for the Floyd-Warshall algorithm which seems to give not all pairs. Why are so many ...
1
vote
0answers
10 views

arcpy.UploadServiceDefinition_server sometime fails with Error:999999 and fixed with swapping identical ags connection files

I need help resolving an intermittent 999999 failure during arcpy.UploadServiceDefinition_server. I'm using arcpy.UploadServiceDefinition_server with a saved ags arcserver connection file as part of ...
1
vote
1answer
14 views

export more than one but not all attributes with qgis2web

Using the qgis2web plugin: Is it possible to select more than one but not all attributes to be shown as popup? I can select all attributes or only one attribute to be shown. but not for example two ...
0
votes
1answer
14 views

How to set bounds and make map bounce back if moved away?

I wanna make this map bounces to the center, and make the red line the limit that you can move the map. Don't know why my fitbounds doesn't work. Any help? My code: var mapBounds = ...
1
vote
0answers
14 views

Snap polygon to grid (lat/lon)

I'm trying to code this in Leaflet, but the key is finding the formula to do this. Give a polygon (filled in the image), how can I expand it to fit a grid (lat/lon, outer line in image) ? This is ...
0
votes
0answers
17 views

Django/PostGIS: How to insert coordinates in PointField in EPSG:27700, and return EPSG:4236?

I am using Django 1.9 with PostGIS. I have input data that consists of British National Grid eastings and northings, and a table that looks like this: class Org(models.Model): name = ...
-2
votes
0answers
19 views

Choosing server for dissemination and management of road data? [duplicate]

I would develop an application for the management and analysis of traffic data so I would view the roads and change the line and as soon as I change the line ' road ' should be changed in the database ...

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