1
vote
0answers
12 views

Data format in ERDAS IMAGINE 2014?

I performed radiometric correction analysis on Landsat 8 image ( format: integer unsigned 16 bit) in ERDAS IMAGIN 2014. However, the output image would be created if I could select format: float 32 ...
0
votes
0answers
10 views

QGIS Affine Transformation Parameters

I try to use the qgsAffine plugin to do the transformation. But no idea in its usage. Anyone can post an example. Many thanks!! How to find the transformation parameters? I found some posts suggest ...
1
vote
1answer
14 views

Add a certain number of days for a date field

I have one field for a permit decision date, and then I have another field for 180 days from that permit date. The permit date field has data entered, but the 180 day field I would like to calculate ...
1
vote
0answers
13 views

Python Basemap fails

I am using Anaconda 2.1.0 and Basemap installation is successful conda install basemap However, I keep getting the following error when I try to project lat,lon to a planar: Assertion failed: (0), ...
1
vote
0answers
32 views

How to get an ArcGIS custom tool to run fom the command line?

I have been experimenting with ESRI's CalculateArea custom tool and it works fine running within ArcGIS from a toolbox. Then I wanted to see if I could run it as a standalone script from the ...
1
vote
1answer
18 views

How to invoke a WFS service from command line?

I've the following WFS GetFeature request .... ...
2
votes
2answers
21 views

Generic term for CRS axes?

We're making a light web front to a database, and I saw this in a test screenshot: Despite those coordinates being nowhere near North America, the "latitude/longitude" label for those coordinates ...
0
votes
1answer
14 views

Line dash not working OL3 (Openlayers 3)

I want to display a dashed line in a vector layer, as the it's shown in the Documentation there is a propriety called lineDash , but it didn't work for me here my code : var iconStyle_line = new ...
0
votes
0answers
12 views

Error generating using SAGA

I am trying to generate a Slope Curvature Raster in Saga, but i am always getting the same error (images with the errors below). And when i use GRASS it generates with no problems. What could be the ...
0
votes
1answer
25 views

eliminate small polygons of a PNG with gdal_sieve

I want to eliminate polygons wich consist of less than 3550 px in this PNG . I tried using gdal_sieve but there seems to be an error. gdal_sieve -st 3550 E8.png -of PNG E8sieve3550_4.png ERROR 6: ...
0
votes
0answers
9 views

Address Locator “Geocoding service”

I've already created an Address Locator sucessfuly and published it as a Geocoding service, but I need to verify that its working from the rest since its not working from my web mapping application ...
0
votes
0answers
8 views

how to generate NDVI with multi channel images?

I have a 6 channel proprietary camera and I need to create a NDVI map. I created a map from each band, so now I have 6 files each one on a different band width. How can I proceed now? I am using QGIS ...
0
votes
1answer
18 views

Default password for geoserver 2.1.4 not working

I have installed geoserver 2.1.4 on Ubuntu 10.04 i have jetty running on port 90. I get to the login screen. I introduce user: admin password: geoserver and i am getting that user or passowrd are not ...
0
votes
0answers
28 views

Using representations in Arcmap

It's really frustrating that adding a new representation form the Catalog window of ArcMap does not work while it works for TOC when adding the required lyr file as a symbology then right click and ...
0
votes
0answers
9 views

How can i read a DGN file by DotSpatial in VB.Net?

I am new in DotSpatial and want to develop a program for converting DGN to Shapefile. I had to use opensource components. At first i want to open a DGN(ver.8). Please give me a hand.
-2
votes
0answers
17 views

How to work data driven page with arcpy? [on hold]

Can somebody share any video or something how to work with data driven page with arcpy?
1
vote
0answers
35 views

Area in KM from Polygon of coordinates

I have polygons from coordinates in (python shapely) that looks like this POLYGON ((24.8085317 46.8512821, 24.7986952 46.8574619, 24.8088238 46.8664741, 24.8155239 46.8576335, 24.8085317 46.8512821)) ...
0
votes
0answers
15 views

Spatial Reference Conversion

I am currently having some problem with the spatial reference projection on the map in Android. Basically I have a base map which is OneMap and all the coordinates stored in database is in SVY21 ...
-3
votes
0answers
20 views

c++ qgisvector layer is not Valid [on hold]

#include <QtCore> #include <QApplication> #include <QWidget> #include <qgsapplication.h> #include <QMainWindow> #include <qgsmapcanvas.h> #include ...
1
vote
0answers
18 views

OL3 27700 WMS inspire

I am just getting into OL3 from a GIS background - I don't have much of a programming background. I am trying to use WMS layers from inspire in an OL3 app ...
2
votes
0answers
24 views

Finding and using data on population density files

I'm new to GIS and been trying to figure so many things out on my own by using QGIS. Now on to my question. I'm attempting to replicate this map for the state of Nevada: ...
1
vote
0answers
23 views

how to automatically update column based on the second layer, trigger, postgreSQL

I am newbie in postgreSQL. I have 2 tables, observation and landcover, i want to create a trigger which would allowed to update the column observation.land based on the spatial information according ...
1
vote
1answer
24 views

Route and distance measuring

I'm looking for a plugin that can make a route from given GPS points and then calculate the distance of this route. I'm going to create GPS points and import it to Qgis as a GPX file. I know I can ...
-1
votes
1answer
30 views

Search layer in MXDs

I work on arcview 10.3 and i try to find layer called "ways" in several mxds. i try this code but it does not work. anyone know how to do it?: import arcpy,os,sys,string import arcpy.mapping from ...
0
votes
0answers
12 views

How to use ArcGIS rest services with mapsforge or osmdroid?

I want to use ArcGIS rest services with mapsforge or osmdroid . How can i use dynamic map service of ArGIS for server ith osmdroid ? I just want to show a dynamic map with mapsforge or osmdroid? Does ...
2
votes
0answers
28 views

Compute for shortest/perpendicular distance between track point and centerline

I am working on a python school project that uses gpx tracks from different devices. Latitude, Longitude, Elevation and Timestamp are the only information that are constantly available. HDOP, Speed, ...
2
votes
1answer
36 views

How to add Attributes to a polygon with arcpy

I have a question about arcpy. I want to create a polygon FeatureClass with attributes. The code below ist just a test-code that generates some polygons for speed testing. I want to add some ...
0
votes
0answers
39 views

How to inverse Y axis

I have a SQLlite database containing cached tiles with X,Y,Z fields and I want to use it in MapCache. My Y field is appearing upside down in Google tile index but I want to inverse it like this: ...
0
votes
0answers
10 views

Representing a line feature layer with Markersymbols in ArcGIS JS API

I am setting a scale dependant renderer for a Featurelayer (geometry type =line) so that in smaller scale it can represented as a marker symbols and in higher scale with a Line symbols. When I tried ...
2
votes
0answers
18 views

Help getting a Mathematical Representation within a Layer's Attribute Table

I'v been playing around with Vector Coding and was wondering if there was any Plugins out there that might let me represent Vectors within a layer as it's Mathematic attributes in the Layer's ...
1
vote
0answers
21 views

How to create a boundary vector of objects after using watershed_segmentation python

I used watershed segmentation in opencv-python to separate object. However, after segmentation I don't know how to create boundary polygons of objects (red rounded in the image attached). Thanks ...
-1
votes
0answers
32 views

Recommend for GIS Professional using the ArcGIS Server as a beginner [on hold]

What is the recommend for the GIS Professional beginner to learn about ArcGIS server and do I need to install the software separately from the original ArcGIS Desktop DVD ? I am using ArcGIS 10.1 ...
0
votes
1answer
19 views

geometries with different SRIDs errors (even after setting SRID)

I've looked at existing questions about this (including this one) and followed the advice that was shared there. I'm still seeing this when I run some queries: RuntimeError: Postgis Plugin: PSQL ...
1
vote
0answers
35 views

Mirror two data frames

Is it possible to link two data frames so that they mirror each other? I know I can set the extent of one data frame to that of another data frame, but then you can only pan/zoom in the parent frame. ...
0
votes
0answers
11 views

Overlay layer not displayed above Base layer for custom panels of Leaflet.groupedlayercontrol plugin

I created simple web map (example http://jsfiddle.net/q77wk17z/1/) with one Overlay and several Base layers using Leaflet.groupedlayercontrol plugin. Overlay and Base layers divide on separate layer ...
1
vote
0answers
9 views

texture fill doesn't display in ArcScene

My texture fill doesn't display properly in ArcScene but it does in ArcMap. What am I doing wrong? Help! ArcMap: ArcScene: The same texture fill has been selected in both ArcMap and ArcScene. ...
0
votes
0answers
25 views

Geoserver init.d script

I am trying to write an script which will start the Geoserver service on system boot. A good manual is given here. I am on Ubuntu14.04 and using Geoserver-2.6.1. I have edited the following lines ...
1
vote
0answers
8 views

OL3 Geoserver WFS error OWS:ExceptionReport

I am attempting to load and draw a WFS layer from geoserver. It is installed on a Windows 2012 Machine. I have enabled CORS and I am able to draw and query WMS layers without fail. Below is my syntax ...
-2
votes
0answers
56 views

GIS technical challanges [on hold]

what are the technical challenges faced by Geographical information system developers and users in going along with the advancement of hardware and software? ?
0
votes
0answers
23 views

How to deal with grid data?

I'm trying to create an application that will show (approximate) population in a given area (the area is quite simple, just a circle with user-supplied coordinates and radius). I've imported this ...
0
votes
0answers
8 views

Failed to find dependencies in Android Studio [on hold]

I follow this steps for using arcgis android api, but android studio didn't find anything for me. Another thing I'm connecting internet via proxy settings in my work office. I made proxy settings in ...
0
votes
0answers
10 views

CartoCSS: labels along inside of polygon boundary

I'm using CartoCSS to render maps that include large polygons (like national parks). At higher zoom levels I want labels along the inside of the polygon boundaries, like in OpenStreetMap: I ...
0
votes
0answers
22 views

Is there any alternative for reshapeGeometry in Qgis 2.4 version

I am splitting the polygon feature if it intersects with the line feature. I am using reshapeGeometry() but it is nt wrking in qgis2.4. Is there any alternative to use for this one.it is wrking ...
1
vote
0answers
12 views

delete the markers in routing mode of MapQuest

I am using MapQuest plugin for LeafletJS. After it draw the map, it sets a marker on each stop point on the route, e.g: A, B, C, D, etc. Is there a way to remove those markers, I just need blue ...
1
vote
0answers
11 views

How to sync html list with markers layer in openlayers?

I have a osm map and with openlayers i can mark a place on it and also have popup for markers, the problem is if i show all markers in map and i have a list, how to show each marker popup by clicking ...
1
vote
0answers
18 views

Reproject xy tiles from mercator to Gauß-Krueger in ubuntu terminal

I´ve exported a map from tilemill as mbtiles and converted them to xyz tiles with help of mbutil. The tiles should be used (for learning purpose) with mod_tile or geoserver and displayed in ...
-1
votes
0answers
29 views

Split polygon based on line qgis [on hold]

I would like to split polygons based on intersection of a polyline. How can i do this with python in QGIS? Thanks
2
votes
0answers
17 views

i want to calculate distance of child latitude, longitude and school latitude, longitude

I have school latitude=54.2323 and longitude=76.2323 and child latitude=32.2323 and longitude=54.2323. school radius i have taken 500 meter. I want to make a circle for school using that radius and ...
1
vote
0answers
45 views

Create floorplan KML file in QGIS?

I import a building floor plan from DXF format to QGIS. When I export it to KML format and then import it in Google Earth, how can I put the floor plan to my desire building location? MY CRS is WSG84 ...
3
votes
2answers
34 views

Querying PostGIS and OSM to get only major stations and subway of UK?

I am working with Great Britain OSM data. I have read the classification of UK railway stations. There are a lot of classes in there such as subway entrance, halt, station and many others. I want to ...

15 30 50 per page