0
votes
0answers
4 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
13 views

Store WGS-84 degree decimal minute coordinates in postgis database

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
0answers
8 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
9 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
9 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
0answers
15 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
12 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
13 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 ...
1
vote
1answer
20 views

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
2
votes
1answer
15 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
16 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 ...
2
votes
2answers
21 views

Combining ST_Touches and ST_Buffer

I'm looking for a PostGIS/Postgres query thats a bit tricky. I want to find all polygons within a specified radius and all neighboring polygons to the polygon where I have my coordinates SELECT * ...
0
votes
0answers
5 views

How to determine the end of a route from data which come constantly

In data from 24h containing coordinates and timestamp I need to determinate short routes when device was moving in the destination point, coordinates can be near to each other but I can't find point ...
-1
votes
0answers
7 views

Worldwide Holidays in different Languages [on hold]

Might be slightly OT here but I'll give it a try since the topic is probably well known to many here: We're looking for a database or system to get current and upcoming holidays by location, ...
0
votes
0answers
17 views

Why Cell towers need to have gps receiver? [on hold]

If the tower is stationary and it will remain to be, then why is there a gps receiver associated with the cell tower when its coordinates are not going to change ever, why not the location coordinates ...
0
votes
1answer
6 views

How to convert floodplain inundation results from a Hec-Ras model into Google Earth?

Having run a Hec-Ras 4.1.0 model, I wish to show the results in Google Earth. How is this possible and is it possible to do this by using ArcMap 10.1?
0
votes
0answers
14 views

Georeferencing CAD drawing with 1 control point

I am a newbie in AutoDesk AutoCAD 2015 and have a problem at hand. I have a drawing which has a known Universal Transvers Mercator based control point but for the drawing to be georeferenced in ...
1
vote
0answers
9 views

How to interpret svg:transform element

I'm rendering maps into SVG files, and I'd like to put geographic metadata into those files, as described in section 7.13 and 7.14 of the SVG spec, but I'm uncertain about how to interpret the ...
0
votes
0answers
7 views

Calculate maneuver details using coordinates

I want to calculate the maneuver details (turn-left, turn-right, etc) from the coordinates array returned by google roads API (I'm using JavaScript). I know maneuver details only returned by google ...
0
votes
0answers
14 views

Why does closing and re-opening ArcCatalog before running an ArcGIS modelbuilder model improve stability? and can this be replicated in the model?

I am using ArcGIS 10.2.2 and ModelBuilder. I have a set of model that work and have been tested. I notice that if I run through the models one after another the open dialogue becomes very slow to ...
0
votes
0answers
25 views

Geoserver on linux gives corrupted tiles on windows

I have a Geoserver running on Ubuntu Linux 15.04. Layers that I upload look just fine on any Linux machine, however, when I test my application on a Windows, maps look like this: Do you have any ...
1
vote
0answers
21 views

Deleting 'garbage' nodes after polygon dissolve

I work with QGIS 2.10.1 on Windows 7 (x64). I have dissolved polygons from an attribute value and the polygons geometries being not perfectly joined together, I get some 'garbage' nodes I need to ...
3
votes
1answer
77 views

Way to find minimum value from a group of values - QGIS?

I'm wondering if there is a way to find the minimum value of a group within QGIS? Basically I need to find the minimum distance of each unique value in a table of about 5000 records. I can do the ...
0
votes
0answers
16 views

Use postgis functions in restful web service java

I am trying to access Postgis functions in Restful web service JAVA. I am using netbeans 8.0.2, Glass Fish, J2EE 7 to create web service, PostGres 9.2 and postgis 2.1.1. Connection to postgres is ...
0
votes
1answer
16 views

Selecting more graphics at once

I'm making a map on ArcMap and I converted the legend to graphics in order to manually manage my symbols and texts. For instance I want to increase the size of all the points in the legend to the same ...
0
votes
1answer
18 views

reading GRASS vector map in python

I know similar questions have been asked several times, but none of the solutions seems suitable for my problem or don't work.. I computed flowlines using the r.flow tool from GRASS GIS, then I ...
1
vote
0answers
9 views

Downgrading WRF Hydro GIS Pre-Processing Tools 2.2 to work with ArcGIS Desktop 10.0?

I have just come across the WRF Hydro GIS Pre-Processing Tools for the first time. The version I am looking at is 2.2 and its documentation says: The processing workflow for creating WRF-Hydro ...
0
votes
1answer
12 views

aerosol optical depth

i want to extract aerosol optical depth on land using modis it seems like I need a value from one of these parameters between Corrected_Optical_Depth_Land and Corrected_Optical_Depth_Land_wav2pl but ...
1
vote
1answer
14 views

Upgrading to ArcGIS 10.3 geodatabase on windows R2 SP2 and Oracle 10g (64 bit) 10.2.0.5?

We have Oracle 10g (64 bit) 10.2.0.5 on Windows Server 2008 Enterprise SP2, and we are planning to migrate our geodatabase from 9.3.1 to 10.3. As per Esri "Oracle database requirements for ArcGIS ...
1
vote
2answers
78 views

Extracting all vertices from line shapefile in a simple way? (no python scripting)

I found that shpdump is a very good tool to extract all vertices from an ESRI polyline shapefile, but I need a single triplet (X,Y,Z) file (ie. shpdump provides all coordinates by parts). Is there a ...
0
votes
0answers
5 views

How to get “all users that made edits on a bbox” in overpass?

I need all the users that made edits on a bbox. I know about the node (user:"username")(bbox)out meta;. What I need is something like this node (user:".*")(bbox)out meta;. But the problem is, it is ...
1
vote
0answers
21 views

QgsVectorLayer from delimitedtext fails

I am having trouble loading csv files into layers using QgsVectorLayer(). I know this looks like a repeat, but I have carefully read Create a script to add delimited text layer in QGIS and ...
0
votes
0answers
24 views

How to create flow maps in Qgis

I have several records from a survey and would like to show flow map from places mentioned in the survey. I have all places mentioned georeferenced and some records mentioned no places and others ...
-1
votes
0answers
16 views

PyQGIS Search Table Data for Items [on hold]

Need some sample PyQGIS code to search "parcels.shp" by user input and find the searched item in the "pin" text field. Zoom to the selected Item on the map.
0
votes
0answers
9 views

QGIS to Leaflet Projection Weirdness

I've been using the mmqgis tool to create a hex grid. It loads up in QGIS looking good, but when I save it as geojson and load it up in leaflet it gets stretched (see attached). It starts life as ...
2
votes
1answer
38 views

QGIS LTR vs other release

Just after some advice with respect to the QGIS LTR schedule. Our IT managers have recently intervened in our use of QGIS (a State Government Authority) and are wanting to put in place a policy to ...
1
vote
0answers
7 views

Adding to signature list from ROI list does not work?

I'm trying out QGIS with SCP, but I've run into some problems First of all, my setup is as follows: QGIS version 2.10.1-Pisa on Mac OSX Yosemite 10.10.5 compiled and running against qt 4.8.6 ...
1
vote
1answer
27 views

Debugging Indentation error on Python Parser of ArcGIS Field Calculator?

Would anyone please help me find out why I get an indentation error in line 3 def calc(f1,f2,f3): remove_list = ['01ST', '02ND', '03RD', '04TH', '05TH', '06TH', '07TH', '08TH', '09TH'] if f2 in ...
1
vote
2answers
100 views

Legal Requirements for using Drones/UAS/UAV for GIS

Can anyone give me a better idea of the specific requirements for commercial use of drones for GIS work? What would be required of the pilot? Edit: I'm also looking for more insight into when the ...
0
votes
2answers
14 views

QGIS 2.10, csv points to vector grid

I have a series of point data from a .csv file that I would like to display as a heatmap raster, the .csv data have various attributes with them and I would like to adjust the color ramp based on ...
3
votes
0answers
32 views

Altering input files in a Python toolbox? [on hold]

I'm trying to add a temporary field to one of the input feature classes in my Python toolbox. arcpy.AddWarning("Adding field of type " + fieldType.upper() + " to FC " + varFC + " called " + ...
1
vote
1answer
36 views

Set color to polygons

I need to color each polygon based on its area and length. I can loop through all polygons, find out their area .geometry().area() and if it is larger than 100 meters squared, than I want it to be ...
1
vote
1answer
18 views

Deploying Web AppBuilder Application with php

I have created my web application with the Web AppBuilder Developer edition, downloaded the zip file and customized the index.html file in my localhost environment. Everything works fine until I ...
0
votes
0answers
19 views

How to use interacting PostgreSQL/PostGIS triggers in QGIS?

I use point geometries (table 'label_point') to place multiple labels on polygon geometries (table 'soil'). After doing layer edits I've to update the affected label_point features. Therefore I've ...
1
vote
1answer
25 views

Certain polygons not obeying JavaScript style rules?

http://catalinagis.org/ownership You can see that some of the parcels don't follow the fill style rules (opacity: 0.5) even though the same style rule applies to all polygons in the data. This ...
0
votes
0answers
10 views

Adding WMS Layer Leaflet Trouble

The Problem: I'm pretty new to leaflet and I'm trying to add a outline of the states over my OSM layer via WMS. I've found several tutorials online, some directly from the leaflet website but haven't ...
2
votes
1answer
37 views

Python codeblock to remove numeric characters from a column not working

I am trying to make use of a codeblock found in this thread: How to remove numeric characters from alphanumeric value in field calculation? I put this code into the pre-logic script field of the ...
0
votes
1answer
28 views

ArcPy PrintMap is cutting off part of layout?

I am running a script that pulls certain .mxd files out of a folder and prints them for me. For some reason, when I use the script, part of the layout is cutoff; on the other hand, when I open each ...
0
votes
1answer
16 views

Stop queued click event if another event is fired

I'm looking for a way to suppress a map click event if some other event has already happened. The application I have created has two primary functions: Click on marker (park points) --> Brings up ...
0
votes
0answers
11 views

Openlayers 3 cant delete feature

I am using OpenLayers 3. Here i found how to create and read drawn features. Now i am trying to delete a feature after i draw it on the map. I have tried several methods , but it doesn't want to ...

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