0
votes
0answers
3 views

Using php to edit CartoDB infowindow?

Perhaps a basic question, but can php code be used in editing the CartoDB infowindow HTML? We want to show or hide a category depending on the value.
0
votes
0answers
5 views

Defining and exporting a path from discrete points in QGIS

I'm working with elevation data (NED, SRTM, etc.) in QGIS and I'm wondering how I might be able to pick a set of points from my map and export the coordinates to something like CSV. For example, I'd ...
1
vote
1answer
9 views

Python for select by attribute then remove from current selection

I have a table called"July_join". Within this table I have many attributes or columns. I want first to select every thing under "grade" column that has values of 90, then remove from this selection ...
0
votes
0answers
5 views

Problem doing a coordinate transform with GDAL python

I'm trying to do a concordant transform from the format of the shapefile (3309) to google maps(4326). This code works on one Centos 6.6 box with the SCL python 2.7 and a custom gdal 2.0 build. ...
0
votes
0answers
8 views

Computational Geometry Problem

I have following datasets- Road network (line) Waterbodies data (polygon) School locations (point) Suberb boundaries (polygon) Property boundary -buildings (polygon) What i want- Generation of ...
2
votes
3answers
23 views

What is the meaning of “Elevation above the surface of the ellipsoid”?

I'm using implementation of Vincenty's algorithms, and I have their class called "position" that requires lat, lon, and elevation defined by: "Elevation above the surface of the ellipsoid". What is ...
0
votes
1answer
12 views

SQL Server geometry vs. geography in Esri map service

We have a SQL Server 2008R2 database where point coordinates are stored as decimal degrees. I want to create an Esri map service which shows those points. As the point data is dynamic I decided to ...
0
votes
0answers
8 views

How do I toggle (add/remove) shapefile layers in Leaflet.js?

If I create a shapefile layer var ac_shpfile = new L.Shapefile("data/AC.zip", {onEachFeature: function (feature, layer) { /* Add some colors based on shapefile features */ }}); and then add it to ...
0
votes
0answers
11 views

Python Satellite Image Processing Resources [on hold]

What are some of the good resources (books, tutorials) to learn image processing with Python for a beginner.
0
votes
0answers
4 views

Group cities into MSA/Agglomerated areas

I've been asked to do some research where I compare survey data to some population numbers. Unfortunately, I think it is likely the case that people who live in smaller cities that are close to large ...
0
votes
0answers
5 views

Missing XML Attributes in Geoserver

I've imported a number of files that used to be in KML format into geoserver after putting everything into a PostGIS table. Now I would like to use CSS style information that was associated with the ...
-3
votes
0answers
27 views

Map for House Basement in USA?

I am looking for some information that I would like to look at the house basements around the USA ? Does anyone know where to find them ?
0
votes
1answer
19 views

How do I classify my counties to color the bottom / top 25% in area?

I have a map of my state with county boundaries. What settings should I use to color the counties based on their area but only if its area falls in the bottom or top 25% of county area? For example, ...
0
votes
0answers
3 views

How can I display a local CartoDB viz.json?

I have a locally hosted CartoDB instance and have been happily playing with it for some time and enjoying all sorts of beautiful visualisations. There is some data ingested and I'd like to create a ...
0
votes
3answers
36 views

How to combine text and integers in a string field?

I have field with numbers in it (field type: double, number format: numberic) and I need to create a new field and put text in front of the numbers. I know that I need to add a new string field, but ...
0
votes
0answers
12 views

How to prompt for layer selection from python console in QGIS?

During script development it's useful to use the QGIS python console to test the same script on different layers. Currently I've been hardcoding layer strings and just swapping out but it isn't ...
0
votes
0answers
5 views

Calculating population statistics for postcode centroids

Perhaps this isn't really specifically a GIS question, but I've been using ArcMap to measure distances from the access points of green spaces in Bristol to postcode centroids and would like to use ...
0
votes
0answers
18 views

Repeat points by field

I have a point layer in ArcGIS that has a field named "Population" that stores an integer value for every point in the layer. I want to create N points in the exact place of the feature that has N as ...
0
votes
1answer
11 views

QGIS Treat null as zero in raster calculator

In QGIS - I have an irregularly shaped raster - I wish to clip an irregular area out of it (call it raster A) with that area set to null. I masked the area (vector polygon) I want to remove and used ...
0
votes
0answers
7 views

CartoDB static maps with a bounding box

I'm using cartodb's static maps API to create a hi-def printable map. The map is placed on top of a basemap generated in Mapbox studio. Looks pretty good but I have an issue that prevents me to ...
0
votes
0answers
4 views

Representation of streets/highways Geometry

I have Navtech data which provides center-lines with geometric data of the roads. The most important data for me is that it gives me the width of the road as well as the number of lanes for most of ...
0
votes
0answers
15 views

How to add rule and add feature class to topology using arcpy and stop getting error 000732?

This script successfully added feature classes to topology when that is all I had scripted it to do. Now I've added the add rule parts (#added) and it's still just adding feature classes without ...
0
votes
0answers
13 views

Determine Angle of Street by Parsing an Overpass-Turbo output xml

I am currently downloading all the street intersections from a bounding box using the query below (see it on overpass). <query type="way" into="hw"> <has-kv k="highway"/> <has-kv ...
1
vote
2answers
28 views

How to tweak Esri add-on tools

So, I recently got an add-on to play with. The tool itself is contained in a tbx file. So, the problem: I'd like to see how the tool runs in a debugger to get a better idea of how it works. I've ...
2
votes
1answer
14 views

How to find all points with certain elevation difference between them in QGIS

I have a point layer (xyz) and want to find all points that have elevation difference of 200m or more. I would like to then draw a line between each pair with the largest elevation difference. The ...
0
votes
0answers
5 views

jquery + openlayers 3

I am trying to put a map in a jquery tab. The end goal is to use it in a web app. I can get it working, but as soon as the map code goes into the app, the map disappears. I am trying to figure out ...
1
vote
0answers
8 views

CartoDB SQL 'Insert Into' vanishes with no error in Safari

I have a little application that allows users to search for locations on a mac submit comments to a CartoDB database using an HMTL form, JavaScript and SQL (and a little PHP to make the API connection ...
0
votes
1answer
10 views

Sub-Shapefile Attribute Ineritance

I have two shape files: a shape file of plant communities: each polygon there covers a wide swath of land and names the plant community there. I also have another shape file that identifies a bunch ...
0
votes
0answers
4 views

SegFault on create an EmptyDataSource From a typedef

I had to create a specific type of point, in order to do that I create a function that create a layer from shp file and data extract of the Code : typedef bool ( *createEmptyDataSourceProc ) ...
0
votes
2answers
28 views

Error Executing tool: ArcPY

I am stuck with a code due to a RunTimeError: Object: Error in Executing tool and I really can't find the mistake. The code is # Now, the script for "Adding Surface Info" to the network, using the ...
1
vote
3answers
43 views

Dissolve without removing interior lines in ArcMAP

I'm fairly new to GIS and I'm having an issue that I hope someone can help me resolve? Basically, what I'm trying to do is merge features based on a single attribute so that my table no longer ...
0
votes
0answers
5 views

Open Sea Map for iOS and Android

I am looking for the possibility to do spatial analysis on Open Sea Map maps from iOS and Android applications for smartphones and tablets. Is there an existing geo spatial database available that I ...
0
votes
0answers
9 views

How to group points based of user-provided distance in ArcGIS

I have a point layer and I need to group/aggregate the points within a 1km proximity into 1 single point to create a new point layer. I was trying to use Aggregate point and then Feature to point, ...
0
votes
0answers
15 views

remove layer from mxd document using arcpy

I would like to remove some layers from the MXD document currently used by a service in the ArcGis Server. I am using arcpy to achieve this task. Here is my code for removing layers from MXD ...
0
votes
1answer
15 views

Install QGIS on ubuntu using the compressed format qgis-2.8.3.tar.bz2

I just cant use apt install becuase slower internet connection and size of QGIS can you show me how to do insall using qgis-2.8.3.tar.bz2 file. I have tried decompressing and use the command ...
1
vote
0answers
12 views

How to remove temporary layer source files in QGIS

I am new to QGIS and python. Titles says it all. I'm modifying a plugin that creates some temporary files (layers) during it's run and I need to loop it a couple times. The algorithm works fine for ...
0
votes
2answers
15 views

Avoid intersection is missing QGIS 2.10, 2.8.2

I need to digitize a lot of polygons and I want to ease my work with the 'avoid intersection' button so that the new polygons do not overlap. In the manual I found (for version 2.6) that the button is ...
1
vote
0answers
18 views

How to get speed and acceleration from trajectory data?

I am using Java and netbeans as a IDE to develop a project. I have got some trajectory data by applying a spatial query. My question is, how can I get speed and acceleration for these trajectory data? ...
3
votes
1answer
75 views

Python toolbox tool objects do not remember instance variables between function calls?

I am developing a Python toolbox, and came across a peculiar behavior: The tool objects does not remember any instance variables between function calls. Consider this code: import arcpy class ...
0
votes
1answer
11 views

OpenGeo - deploying a web app

When executing: suite-sdk deploy procedure I keep getting the following errors: Checking provided application path. Building application resources for 'C:\xxx\xxx\Sites\mySite'. Aug 04, 2015 1:08:45 ...
0
votes
1answer
21 views

pass custom command line arguments?

Is there a way to start QGIS with custom command line arguments and to access those arguments at runtime in a plugin? Background: I'm trying to start QGIS using a third party application(click on a ...
0
votes
1answer
31 views

Is it possible to remove small transparent outline effects between polygons?

after using the vectorizing tool I get the following result (picture). Around the cells you can see a small "boundary". This thin line is transparent and annoying. Is it possible to remove these small ...
0
votes
0answers
10 views

Enable editing only one feature in a Polygon Layer using PyQGIS

I was thinking of locking neighboring polygons (parcels) by disabling editing on them, while editing would be possible on the polygon at the center. This means other polygons can also be edited in ...
0
votes
0answers
13 views

Multi Input Python Toolbox in Arcgis

I use Python toolbox in arcgis, it is possible to add a multiple input file table? And is possible to filter input files allowed by extension?
3
votes
2answers
33 views

How to set a buffer only in a specific direction?

I am trying to create a buffer for several polygons in a south-western orientation. As far as I know, this is not possible using the buffer tool (I use ArcGIS 10.3). I could do it manually but for ...
0
votes
0answers
8 views

Divide/Split single polygons from one Shapefile using ArcGIS for Desktop? [duplicate]

I have a map of Austria which shows all the federal states in own polygons. As a whole - sure - you get Austria. I know how to make several states invisible so that you can just see particular states ...
0
votes
0answers
24 views

Rendering OpenStreetMaps with GeoServer

My target is to have the whole planet to be available in the map client[leaflet.js/openlayers.js] but only a specific country loaded with roads etc. I have followed the steps below to setup my ...
0
votes
0answers
31 views

Coordinate transformation fails in QGIS

I am new to qgis, so this maybe a simple problem, but I don't know how to handle it. I have two layers: One layer is based on WGS84, the other on Gauss-Krueger zone 3 (GK). How can I successful ...
0
votes
1answer
23 views

Explanations for attributes QGIS

I have one column in my attribute table with attributes "1", "2" or "3". 1 = normal route 2 = special route because of the event (every year) 3 = special route because of the event and construction ...
0
votes
1answer
20 views

MapInfo Point Object Dialogue is different to Info Tool's Transformed XY

A MapInfo Professional 11.0.3 user has re-projected data from AGD84 Zone 50 to WGS 84. However when they select a point and look at the point objects's X and Y, they are different to what's reported ...

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