0
votes
0answers
5 views

Route Layer with Arcpy and ArcGIS 10.3

This is my first attempt at using arcpy: I have two CSVs which have columns: CSV1: join|id_a|lat_a|lon_a CSV2: join|id_b|lat_b|lon_b Each has got 100 rows of data. I would like to write a script ...
0
votes
0answers
3 views

A missing feature class in the list when adding classes to a new network dataset

I´m having a problem here when creating a new Network Dataset. You know firstly you have to select the feature classes from the list that will participate in the network dataset. I have a feature ...
0
votes
0answers
9 views

How to select specific polygons? (in QGIS)

I have a polygon layer. I would like to select every first row of the polygons but not manually. Is there an expression to select every first row as seen on the picture with Select by expression in ...
0
votes
0answers
6 views

Layers disappear, ArcGIS layout mode

The top two layers in my table of contents are the most important. Streams and some point shapefiles. They overlay a raster. In layout mode I switched from portrait to landscape. Immediately the ...
0
votes
0answers
6 views

TopoGeometry commands with postgres are really slow

After messing around quite a while, I was finally able to get a topogeometry converted from my geometry table following the example of toTopoGeom. I have the topology extension, with a topology schema ...
1
vote
0answers
8 views

Convert CSV file format to Breakline CSV format file

I have a csv file with almost 36000 rows.The format of csv file is x,y,Polygon number, Z I would like to arrange this csv file in the below mentioned format. Let’s say in this example, Polygon ...
0
votes
0answers
10 views

How to remove projection in terminal from .shp file with valid .prj available

I have .prj, .shp, .sbn, .sbx, .shx, .dbf files where the content of the .prj file is the following: ...
2
votes
0answers
8 views

Where is the field mapping for Attribute Transfer tool stored?

I can't seem to find any patterns in when the source-destination field mapping is preserved. Is this stored in the database, map document, or elsewhere? I'd like to know so I don't have to create the ...
1
vote
0answers
6 views

How to use TerriaJS in a Rails Application?

I am looking to install TerriaJS as a Cesium/Leaflet replacement for the geospatial piece I have running on my web application. I have looked at Github and the wiki with the TerriaJS application and I ...
0
votes
0answers
12 views

Iteration from a text file

Trying to determine logic to create a line from the points for each Line_X number Example: Create array of points, then a polyline for all points of Line_1, then Line_2, etc. pointList = ...
1
vote
0answers
16 views

Problem in polygon division using the union tool from QGIS

I am trying to overlay two polygon layers using the union tool from QGIS, to then compute the areas from the resulting polygons. However, in the resulting layer some polygons are not divided as ...
1
vote
0answers
6 views

OSM2PO Postgres to graph for A*

I have created a directed graph from the nodes stored within my Postgres db but the resulting graph doesn't seem to be fully connected and as a result my shortest path algorithm is not able to find a ...
1
vote
0answers
7 views

Openlayers 3 - click under geolocation layer

I am using geolocation feature of Openlayers 3.13, as in the examples. (http://openlayers.org/en/v3.13.0/examples/geolocation.html) However I also have queryable point layers, and when I track the ...
1
vote
0answers
9 views

Best SRID for worldwide data in Microsoft Sql Server geometry field?

I'm using Microsoft Sql Server 2012 to store geographical data related to hydrometeorological stations which are scattered around the globe (point layers and multipolygon layers). My data is in WGS84 ...
1
vote
1answer
13 views

Editing polyline data, cant snap or modify feature

Editing in Desktop standard 10.3 and I am having issues with snapping polylines. I keep getting the same error below when I try to snap or move a line. Any ideas On why this might be happening?
3
votes
0answers
23 views

Merge RGB band using python

I need to merge the RGB bands of three TIFF images. I'm trying to use a PIL library (Python Imaging Library), but this execution error happens: Traceback (most recent call last): File ...
1
vote
0answers
6 views

Postgis cannot open out of db dted file

I import a dted file into a postgis enabled database with the -R option. I also gave the complete directory path to the file. I also have the raster and gdal related environment variables on the ...
2
votes
1answer
27 views

Strange behavior of of ST_Intersects in PostGIS

I'm quite new to GIS and PostGIS and, probably, this question has been already answered multiple times, but unfortunately I was not able to find an answer. I have few polygons and I want to find ...
0
votes
0answers
8 views

Can I import my own data and Dijkstra function in Open Trip Planner or Open Source Routing Machine

I have a lot of geographical proprietary data that I want to use in routing algorithms. I was using pgRouting, but the requirements of the software changed (now includes multi-modal routes that ...
0
votes
0answers
6 views

Openlayers3 - how to assign multiple styles for the same layer from geoserver

This is my code, the function set style is not working osm background layer. I have many sld files for one layer and I want apply them on the same layer: <script> var untiled = new ...
3
votes
0answers
10 views

Thematic map exported using QGIS2Web is extremely laggy

I have made a world thematic map and added layers of data for creating graduated color scheme on the country level. I need a interactive map as an output which shows values when user hover over any ...
0
votes
0answers
4 views

Extended QGIS Web Client (gisapp) - unable to login

I have installed EQWC using the guidelines. The QGIS server is working using Apache 2.4 PostGRES is working (when adding new user, login attempt is increasing) I always get result: "Unable to ...
3
votes
1answer
44 views

Problem Editing a Vector Layer QGIS

I have a vector layer which I need to load and edit (add several attribute columns). I am doing this without opening QGIS, so within a python script. I have the following piece of code for the layer ...
1
vote
0answers
10 views

NMEA to CSV with timestamp using gpsbabel

I tried to convert a file in NMEA to csv using gpsbabel, $ gpsbabel -i nmea -f GPS_20160204_092027.log -o csv -F GPS_20160204_092027.csv I get a csv file with only latitude and longitude, but was ...
1
vote
0answers
14 views

Write userID to field automatically every time an object is edited

Currently every user has to put his/her useriD in a field after every change made to an object in the database. This takes time and can be forgotten easily. Is there a SQL-Command giving back the ...
1
vote
1answer
11 views

Print composer layout changes when converting to PDF

I have the problem of the layout/formatting of my QGIS 2.13.2 in the print converter changing whenever I try to print to PDF Form. In the print converter my layout looks good and the shapefile is at ...
0
votes
0answers
7 views

Open Street Map Base Map on QField

I am using QField on an Android tablet, I would like to know if I could use a web mapping service like open street map as a base map. Without having the actual file stored on the tablet?
0
votes
1answer
16 views

Geotools create shapefile in memory

Is it possible to convert between shapefile and geojson using geotools without access to file system? I have that restriction in my web app, but I need to create shapefile as byte array and then do ...
0
votes
0answers
15 views

Cannot access/store to default gdb from arcpy

I have a python script executing spatial joins for x input shapefiles from the user. The output should be stored in the default geodatabase - this is, because the join is done multiple times and the ...
3
votes
2answers
89 views

How to create in QGIS shapefile a field that automatically returns the current date

I'm digitizing a shapefile in QGIS and I need to create a field that returns automatically the current date.
0
votes
0answers
7 views

OpenLayers3: Error after remove feature and draw new

When I draw feature and then remove and drawing again I catch exception:Uncaught AssertionError: Assertion failed: uid (145) of value ([object Object]) does not exist and after I drawEnd such Uncaught ...
0
votes
1answer
15 views

Concatenating 3 columns with str.rjust gives an error [on hold]

So, I want to concatenate 3 columns (2 short, 1 double) to a fourth (string) column. They should not be added, but concatenated with the help of .rjust() to add some zeros here and there. I've ...
1
vote
0answers
9 views

How do I use Mapbox studio style and exported mbtiles to create a web map?

Ok so I've gone round and round looking for an answer to this. I used Mapbox Studio to create a style using a local tile source. I exported the source to get vector mbtiles. Now how do I use these ...
1
vote
1answer
14 views

Is there a possibility to simply display the next element on a layer?

I have to check all the elements on a layer and I'm looking for an easy way to go through all of them. One option would be to open the attribute table and just always click on the next line and then ...
1
vote
1answer
12 views

Unable to call otbApplication from python

I have been tryng to use some of OTB functions from python, but i am unable to import the module (otbApplication), even after to adding the PYTHONPATH to my basrc file. I am working in Ubuntu14.04, ...
2
votes
0answers
13 views

QGIS upgrade from 1.8 to 2.12: Vector layers are not displayed

I just updated my very outdated version of QGIS. I was running 1.8 and thought the new version would work out a couple kinks that had developed. Well, now I can't even figure out how to make my vector ...
1
vote
1answer
56 views

Determine rasters particular area's within ranges using python

My directions: Create a script that determines what areas meet the following conditions: Moderate slope — between 5 and 20 degrees Southerly aspect — between 150 and 270 degrees Forested — land ...
1
vote
0answers
14 views

Python error when using r.reclass on raster with no CRS

I have a set of GRID data (directory of .adf files) that I'm trying to reclassify in QGIS. I'm using the GRASS r.reclass function to try to reclassify the layers, but GRASS keeps failing and ...
2
votes
1answer
13 views

Creating groups containing slopes of a specific range

I have a basic knowledge of QGIS and can do everything I need to do to achieve my requirements except the following. I'm trying to graphically show areas of land that contain a set of specific slope ...
2
votes
1answer
20 views

How to render Multi-Response GeoJSON tiles

I am using TileStache to combine and server multiple vector layers in a single Mutli-Response GeoJSON tile, which is basically all my individual tiles/layers (GeoJSONs containing either roads, pois, ...
0
votes
0answers
9 views

Using %name% without extension in ArcGIS ModelBuilder? [duplicate]

I am using modelbuilder to reclassify raster files (tif) and convert them into polygons.I cannot make the names of the output files right, and I always receive message suggesting invalid characters. ...
4
votes
0answers
21 views

Accessing the internal data structure storing Postgis spatial index (PostGres GiST)

I am curious about how the internal data structures and storage mechanism of the spatial GiST index in Postgis. In Oracle, I used to like to show how the SDO indexes were "just another table", and how ...
1
vote
0answers
18 views

Merging multiple fields with same parcel id yet different attribute values, while keeping all fields?

I am using ArcGIS 10.3 for Desktop. I have a property parcel layer that when Intersected, each parcel is broken up into hectares of different land covers. My question is can this be merged (or ...
2
votes
2answers
22 views

Select Lines that have points on edge but not on end

I am looking for an easier way (if it exists) of selecting all lines that have points snapped to them but where the points are not on the end-points of the line. My current method is to: Generate ...
1
vote
0answers
12 views

importing fiona before shapely raising geos-related OSError

I ran into an issue where the order of imports for fiona and shapely caused the following geos error below which happens when i import fiona before shapely. If I do the reverse all is fine. Must be ...
1
vote
0answers
8 views

CartoDB map export

Any document on how to transfer CartoDB map into Splunk Dashboard and what are the steps I need to perform ? I have created the map already I have CartoDB / Torque Map application installed in ...
2
votes
0answers
21 views

GeoDjango -How to store measurement data

Assume I have recorded the following values during a bike trip. One such dataset has been recorded every 5 seconds: timestamp, longitute, latitude, pulse rate, pedal frequency What is the best way ...
1
vote
0answers
11 views

CartoDB - timestamp SQL help

I've explored this forum fairly extensively trying to get answers as to why my SQL isn't working. I need help with the timestamp on a torque map. I've used the following formula, obviously changing ...
2
votes
1answer
12 views

Trying to remove all data from intersections in FME

I have road data and my goal is to get rid of any data where intersections are. That way when two road features meet they do not intersect. I am using FME from safe to complete this. I ...
0
votes
0answers
21 views

Advanced Cartography of a line feature [duplicate]

I'm attempting to duplicate the maroon boundary line. I've used offsets in the line symbol editing but can't seem to achieve the smooth blend you see the picture. I've tried using multiple layers of ...

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