0
votes
0answers
2 views

How to create isometric 3D map with postgis

I am looking for a way to create isometric 3D maps based on data stored in a PostGIS database. My idea is to create a PostGIS function that will return a SVG image like the one below. It is easy to ...
0
votes
0answers
1 view

What's the easiest way to create regions (a set of lat, lng) on a map?

I'm writing a project for school and as a part of the project I need to tell if a certain point is within a given region (which is a polygon made of lat, lng tuples). So far I was working with ...
0
votes
0answers
3 views

Mosaic DEM has large pixel

I created a mosaic dataset in ArcMap 10.2 from tiles of ASTER DEM's at 30m resolution. I am attaching the image of what my export looks like. You can see that there are extremely large, alternating ...
0
votes
0answers
3 views

Avoid PermGenSpace error in Tomcat with geonetwork 3.0

I'm running a geonetwork 3.0.1 instance on tomcat7. Regularly, i.e. every few actions of my only user, my tomcat runs into a PermGenSpace error. This especially occurs during harvesting of other ...
0
votes
0answers
6 views

Understanding a typical output from a geotiff file

A typical output from geotiflib mey look like this: Geotiff_Information: Version: 1 Key_Revision: 1.0 Tagged_Information: ModelTiepointTag (2,3): 0 0 ...
1
vote
0answers
3 views

Import postgis layer from S3 link

I have a postgis layer (layer.sql), which I am trying to add to my postgres database (mydatabase). The postgis layer is stored on S3 (https://s3.us.../layer.sql). I can add the layer to my database ...
0
votes
1answer
15 views

UpdateCursor Not Working

I'm writing a short script that iterates over a list of feature classes and sets values for a specific field ("Contour_Type"), based on the values in two other fields ("Type" and "Depression"). It ...
0
votes
0answers
26 views

Ph.D or Consultancy? [on hold]

I am currently entering my second year in my Masters of Urban Planning. I am 50/50 on whether to go for Ph.D or not. If not, I will do consulting. But the Ph.D is at the back of my mind (nagging more ...
0
votes
1answer
14 views

Identify a Massachusetts Municipality from address

I am trying to create or utilize a lookup table to identify which Massachusetts Municipality my address is in. Do you know of an online resource available, or a way to identify the municiaplity uses ...
0
votes
1answer
6 views

Use CartoDB Map as Tile Service

I have a custom CartoDB map that uses data I have uploaded and styled. The map works perfectly and I would like to use it as a basemap in a different application. Is there any way to use this map as a ...
1
vote
0answers
18 views

How to display selected features in a map to exporte as PDF

I've already managed to select feature by ID in a layer and zoom to it using pyqgis. The canvas considered this changes but the map that I exported as PDF do not consider this changes, any idea to ...
2
votes
0answers
14 views

How to randomly select three points in each polygon?

I have two layers: first layer includes polygons of districts, second layer containts points (phytocoenological relevées). The goal is to create a new layer that will contain max 3 randomly selected ...
3
votes
1answer
20 views

Migrate datatypes from geometry to geography in MS SQL

I have three ESRI feature classes (POINT, LINE and POLYGON) that contain a geometry datatype column with data in a projected coordinate system. I'm looking for a way that I can convert & project ...
0
votes
0answers
14 views

from two tables make a new one

I have two tables both of them has linestring geometry. I try to make a new one which contain the first one and from the second take only the decimal v when the linestring of the first table touch a ...
0
votes
1answer
11 views

Positioning Overview Map On ArcGIS API for Javascript

I am adding an overview Map to the main map by this way var overviewMap = new OverviewMap({ map: map, visible: true }); overviewMap.startup(); which the ...
1
vote
0answers
10 views

Comparing the use of GDAL to build raster pyramids or overviews versus Arcmap 10.1

I have a large set of imagery that I created a mosaic from in arcmap 10.1. I want to use GDAL to create the overviews because arcmap has issues building the pyramids and never seems to complete. I ...
0
votes
1answer
23 views

Drawing districts on city map using ArcGIS for Desktop?

I am quite new to ArcGIS and would really appreciate your support. I am trying to create district level maps of all 81 cities in Turkey. There have been lots of new districts recently, so I feel ...
0
votes
0answers
17 views

Where is Web Applications in ArcGIS server 10.2?

I'm new in using ArcGIS server 10.2 .When I install ArcGIS server 10.2, I coudln't find Web Applications tab like ArcGIS 10 . In ArcGIS server 10 web applications and web services installed ...
0
votes
1answer
6 views

Use OpenTopoMap with openLayers 3

In my website, I wish to display a map with few markers of historicals points from a geoJson file. I start with openlayers 3 api and all is ok, it works. For the moment I use the OpenStreepMap map ...
0
votes
1answer
21 views

Items won't show up in legend

I've imported some values attached to x y coordinates and am trying to display them as charts. All has gone well apart from the values displayed on the charts won't appear in the legend. I've exported ...
-2
votes
0answers
16 views

Vector and Product Database structure? [on hold]

What is best practice for database/file hierarchy for storing Vector, Raster and Maps/Products? Or what are some of your organizations using as well as shapefile naming conventions? Ex : Vector/ ...
1
vote
0answers
10 views

ArcPy script using 'symbology.addAllValues()' failing [on hold]

I'm having a problem trying to use symbology.addAllValues() on a layer with Unique Values Symbology. Unfortunately, I can't paste in actual code here since the machine I'm working on is classified, ...
0
votes
0answers
8 views

Print LABEL text in multiple lines in Cesium JS API

I have a problem printing text in multiple lines using Label in Cesium JavaScript API. text is member of Label class which takes String as input but doesn't really support multiple line labels using ...
0
votes
0answers
15 views

ArcGIS Server Services status 'stopping'

My services show as 'stopping' in the arcgis server 10.3.1 manager after the upgrade from 10.2. In the admin page the status reads as started for the configuration state and stopped for the real time ...
0
votes
0answers
26 views

Is it possible to create a spatial view with arcpy?

We currently use an extension in ArcMap that was created in house to make a spatial view from two tables on an SDE server. The first table is a SDE Feature Class of all US postal zip codes (polygon). ...
0
votes
1answer
18 views

How to add a Domain to a Feature Class in ArcGIS when the Subtype Field is Frozen?

I'm trying to add a Domain to a Field in a Feature Class in ArcGIS 10.2. I'm Following the Instructions found in the Official Documentation for Associating default values and domains with tables and ...
0
votes
0answers
16 views

google.maps.ROADMAP doesn't show on OL unless I change base layer and re apply

I have web app with OL 2.13 and google street as base layer. Everything worked fine till couple of days ago, suddenly (without any change) the map loads white (no errors in console) and only if I load ...
0
votes
0answers
14 views

PostGIS Clustering. Group by geographic point location proximity

I have a table where i keep user's location history. The system gets user's current location each minute and writes it into "user_locations" table. Later on; when showing the locations that the user ...
0
votes
0answers
17 views

Tomcat html broken when using windows [on hold]

I have a Tomcat 7 server running on Ubuntu Linux. If I browse on this server with any Unix system everything seems okay. When browsing there with windows I get weird behavior most of the time. Html is ...
0
votes
0answers
9 views

cannot get layers to display in webapp on localhost - geoserver in jetty, app in tomcat

I’m in the middle of a prototype migration/deployment and have really hit a wall serving up my layers from geoserver. I’ve geoserver running from the “stand-alone” version running in jetty on one ...
1
vote
2answers
25 views

How to write log messages from arcpy to ArcGis server?

Published geoprocessing services write logs that are available at ArcGis Server Manager (arcgis-server/arcgis/manager/log.html) Arcpy has AddMessage, AddError, etc methods for logging, but they are ...
1
vote
0answers
16 views

Is there an equivalent of GeoDjango for Flask or other Python web frameworks?

I have experimented with GeoDjango, but I think nobody would be surprised if I said there's quite a steep learning curve. I prefer Flask, which I also know much more than Django anyway, but I couldn't ...
2
votes
0answers
13 views

qgis 2.8.2 always produces minidump on exit

QGIS 2.8.2 on windows 8.1 produces the below error every time it is closed. Anyone have any ideas as to why or possible fixes ?
0
votes
0answers
8 views

Raster image SharpMap

I am new to GIS environment. I have set of images (.tif) for each zoom level of my map. I have also a .dbf file which has the coordinate of each image (xmin,ymin,xmax,ymax) and path of the image. Now ...
1
vote
0answers
33 views

ArcMap Label Help - Label from X/Y Coordinate [on hold]

I don't have much experience with VBScript or Python, but I have a unique request that I have quite a bit of trouble with. Within my attributes, I have an X and Y coordinate. I would like to turn on ...
1
vote
0answers
13 views

Text box with automated coordinate reference system in use on Qgis

Using an expression, is it possible to automatically fill a text box placed on the map (in the composer) showing the reference coordinate system of the project? If possible, how would that expression ...
0
votes
0answers
12 views

What is the maximum number of input geometries for the ArcGIS Server REST geometry service Intersect operation?

I am trying to troubleshoot an HTTP POST of a large intersect query on a geometry collection with just over 27000 geometries. The result is that I get back the HTML page for Intersect stating that: ...
1
vote
0answers
27 views

How to recognise building type from polygons?

I have a number of building polygons which are extracted from the aerial images, along with their postal address. (The aerial images are not available in my case.) For example, the polygon of a square ...
0
votes
0answers
15 views

ArcGIS Server returns an empty result

A Model Builder tool has been set up as a geoprocessing service on the server. The tool consists of Python scripts and native Model Builder functions. Unfortunately, I did not write this tool but it ...
0
votes
1answer
11 views

Javascript API: queryTask error - where should I put the alert?

Where in the code do I add an error message if nothing is returned? function execute() { // var queryTask = new ...
0
votes
0answers
21 views

Store WGS-84 degree decimal minute coordinates in postgis database [duplicate]

I have some data in a texfile where the coordinates are given in this format: lat lon 23S19.69 66W45.87 24S01.73 66W55.61 I already learned that it is some kind of WGS-84 with degree and ...
0
votes
1answer
16 views

Creating an intersecting linestring layer from two polygon layers using some tolerance

I have two postgis layers: The first layer contains the sidewalks of my town (polygons in blue). The second one contains the pavements (roads) of my town (polygons in brown). The map looks like ...
0
votes
0answers
13 views

Changing datasource of a .lyr file results in empty layer with empty symbology (ArcObjects VB.NET)

I'm having a hard time adding my grid to the map and changing its symbology with an existing lyr file. I have found a great post by Neil Clemmons that explains this, but it doesn't work for me. I ...
0
votes
0answers
15 views

reproject satellite orbit values from irregular grid to regular grid

I have a ncdf file containing measurements covering a satellite orbit. The ncdf contains the corresponding latitude / longitude fields but they ar irregularly spaced. I tried rasterizing the values ...
0
votes
1answer
29 views

How to find the intersection length between two polygons using python

I have two polygons and i want to find the intersection line length between these polygons. for geom1,geom2 in itertools.permutations(selection,r=2): intersection ...
1
vote
0answers
14 views

QGIS 2.10 Edit shape files saving only once

I'm have some trouble while editing my shape files. I can save only once. So what I have to do is to save as another file, add to QGIS and edit again. Save as another file... And on and on... Does ...
1
vote
0answers
16 views

qgis python: select on screen and change (pre-set) properties accordingly

I have a map with different zones where I have drawn isochrones -where I will arrive within 15 min, within 30 min and so on. The picture attached shows the 15-120 min isochrones. This is set as a ...
3
votes
2answers
56 views

How to create a consecutive alphanumeric column in a QGIS attribute table?

I am trying to create a column in the attribute table such that each cell lable is a prefix (M) follwed by a unique number ie M1, M2,.. etc
3
votes
1answer
19 views

Snapping of ArcGIS Online features fails in ArcGIS pro

I'd like to edit a feature-layer that is published in ArcGIS Online with ArcGIS pro. I urgently require the snapping function. However, after enabling snapping I can only snap to the feature that is ...
0
votes
0answers
18 views

Vector layer shifts over openlayer using QGIS 2.10.1

I have just created a new vector layer mapping features from the Bing Aerial Open Layer and at first they are aligned, but after a short while of working shift out of alignment. I use CRS OSGB 27700 ...

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