2
votes
1answer
36 views

Run processing toolbox outside QGIS in standalone app

I am developing a standalone app in Python, using QGIS libraries including processing algorithms. I am developing in Linux environment and I put the libraries in a folder. Also I put the processing ...
3
votes
1answer
15 views

How to shift a raster in QGIS?

I'm looking for a tool or a plug-in for QGIS that would allow me to shift rasters to new coordinates. An equivalent of ArcGIS' Shift tool would be the best option. I know I can edit the world file ...
0
votes
1answer
11 views

Photogallery for OpenLayers

me and my collegue are making a web map application for my town for tourism purpose. The map itself is pretty done, actually, so we were wondering whether add some photos of the town, or that shows ...
2
votes
1answer
20 views

QGIS : Disable a line in 'Select by expression' dialog

I would like to disable some lines in the 'Select by expression' dialog (QGIS 2.6) but I can't find whether it is possible or not, and if yes, how to achieve that. I have tried several characters ...
1
vote
1answer
9 views

Is it valid to adjust quantile buckets to “nice” numbers for better readability?

I'm making a map about terrorist attacks and fatalities in CartoDB. For data clustering I'm using quantiles. The calculated buckets are 16, 32, 50, 97, 700. Is it okay to adjust the quantiles to make ...
0
votes
0answers
14 views

Gdal in ipython

i am trying to run GDAL in Ipython Notebook but i don't get it. I did conda install GDAL and it was aparently ok, but when i try to do the import i get this: ImportError ...
1
vote
0answers
11 views

Ogr Python API: set null values in feature

Im trying to convert OGR geodata from one driver to another, like the command line tool ogr2ogr do, but using the python API. My problem is, that the NULL values in the input data are converted as ...
1
vote
2answers
14 views

Including js file in openlayer.js file

I have this code for showing markers on map: function addUserLayerCSV(){ layer1 = new OpenLayers.Layer.Vector("CSV", { projection: epsg6316, strategies: [new ...
0
votes
1answer
17 views

Creating Stream Order

I'm new user of this software, please can somebody guide me, how to calculate stream order in QGIS or GRASS GIS, step by step.... mean commands and how to calculate watershed in this.
-1
votes
0answers
7 views

How to break polylines within a network by overlapping polygon at edges of polygons [duplicate]

I am trying to achieve this Calculating length of road network within a polygon But I can't figure out how he can break polylines using what tool. I am using arcgis 10.2
1
vote
0answers
16 views

Join spatial polygons by code in R

I am in the process of creating a spatial polygon map for the Valencia region in Spain. I asked the question in StackOverflow (http://stackoverflow.com/q/19791210/709777) and could produce the map. ...
1
vote
1answer
26 views

Arcmap record value is not displaying entirely

On this project i have a column composed of numeric and alphanumeric values. The data comes from multiple sources, so it is quite messy. Using python I am trying to filter the data and copy the values ...
0
votes
0answers
8 views

how to download the map of some cities and use it in GeoMoose?

Is there anyway to use the map of some country like Italy in offline mode ? like bing or google map. Actually I want the map of some countries(in offline) for working with geoMoose, is there anyway to ...
-1
votes
1answer
25 views

Merge layer files in folders and subfolders with arcpy

I work with arcview 10.3. I try to merge layer files in order to get one layer file that include all the features in the other layer files. All layer files as different names, and they all spread in ...
0
votes
0answers
10 views

ArcSDE Compress Issue [on hold]

i am facing a problem about compress sde geodatabase. i am using oracle database for sde and create a multi user editing environment. i have deleted all edit versions after reconcile and post and all ...
1
vote
0answers
10 views

How to print CJK characters in the title using ArcGIS javascript api?

I am trying to print Chinese characters title using ArcGIS javascript (3.10); however, the characters becomes a square block. I am able to see the characters in the JSON passed to the print task but ...
0
votes
1answer
16 views

Using MOD within a GROUP BY subquery on point dataset

I have a dataset of 200 points (in shp/f gdb/p gdb format) in ArcGIS. I am trying to use the MOD() function within a GROUP BY subquery as a definition query on the layer to thin out the data. What ...
1
vote
0answers
22 views

Longest Common Subsequence for trajectory matching in Python

Is there any fast implementation of the Longest Common Subsequence algorithm for trajectory matching in Python? Ideally it would work with trajectories of different length in 2d spaces.
0
votes
1answer
23 views

Why can't I use AddField_management in ArcPy?

I get this error, when I try to run this ArcPy code in Eclipse PyDev. The red underline under SearchCursor is not important, the Eclipse doesn't recognise the import, but that works perfectly (sure, ...
1
vote
2answers
31 views

Plot shapefile with matplotlib

I am trying to read a shapefile and plot it using matplotlib. Here is the code: import matplotlib.pyplot as plt import shapefile shpFilePath = "D:\test.shp" listx=[] listy=[] test = ...
0
votes
0answers
24 views

Learning Network Analyst module of ArcPy (arcpy.na)? [on hold]

Can anyone recommend online resources for learning to use the arcpy.na Network Analyst extension. I'm particularly interested in automating network solves with input parameters, but would also like to ...
0
votes
1answer
11 views

unit of point radius in OpenLayers.js

What is the unit of measurement for pointRadius in the code bellow? var dotStyle = new OpenLayers.StyleMap({ pointRadius: 5, }); I mean what does 5 represent? 5pixels or 5mm? or ...
1
vote
1answer
11 views

Difference between FCELL, DCELL and CELL in GRASS GIS?

Can anyone clarify for me please the options in the "precision" parameter when calculating slope, aspect and curvature in GRASS GIS. What is the difference between FCELL, DCELL and CELL?
1
vote
0answers
14 views

Connect two contour line with calculated line lenght

Is it possible to make plugin for qgis like PEGGER for arcview 3.2? Problem is, how to make path over contour lines with a grade in percent Formula is: K= e*100/G*M ; K=10*100/0.08*10000=1.25m K- ...
0
votes
1answer
25 views

Error using arcpy.da.SearchCursor and MakeFeatureLayer

im trying to write a script that allows me to iterate through my map layers, and for each layer, iterate over each feature and add a field that gives the location of the feature using my index layer ...
1
vote
0answers
39 views

Calculating vector area in QGIS

I have calculated a viewshed (ZVI) in OpenWind and opened the raster in QGIS I have then converted the raster to a vector When I open the attribute table there are 4682 rows (features) and there is ...
0
votes
0answers
11 views

Choosing time frame for change detection analysis?

May i know if there is any standard time scale on which change of land use/cover should be analysed? I have a difficulty choosing the time frame for my analysis. I mean how far apart do the years ...
0
votes
1answer
45 views

Add field to feature class by location

im trying to write a script that allows me to iterate through my map layers, and for each layer, iterate over each feature and add a field that gives the location of the feature using my index layer ...
1
vote
1answer
11 views

Rasters change pixel size and range of values when imported into QGIS

I have observed that when I import rasters into QGIS their pixel size changes and also, the full range of the raster's value does not appear. For instance, I may have a raster with values ranging from ...
0
votes
1answer
31 views

Merge shapefiles in folders and subfolders with arcpy

I try to merge 20 shapefiles in order to get one shapefile that include all the features. All shapefiles are called "migrashim", and they spread in big folder that divided to a lot of sub folders. ...
0
votes
1answer
30 views

MapInfo Calculating the number of Points that Fall within a Boundary

I have two layers in MapInfo (points and polygons). I need to select points which fall within polygons where the income > 1500 I tryed this one but not working: ...
0
votes
1answer
11 views

Google Maps API v2 and Maps engine

I´m researching on the options in drawing shapes on Google Maps with API v2 and Google Maps Engine. I´ve managed to set up the admission to draw a viewed layer on my setup on my site. Does anyone know ...
0
votes
0answers
13 views

Exporting spatial object in mysql to shapefile with spatial reference

Info: Win7, MySQL 5.x and OSGEO4W 1.11 To import a shapeafile to MySQL I use this ogr2ogr command: ogr2ogr -f MySQL MySQL:gis,user=root,password=password C:\posto_pianco.shp -nln pianco_post -a_srs ...
1
vote
1answer
14 views

Geoserver (automatic labeling generalization)

I am a Master student looking to do my thesis in cartographic labelling using GeoServer. The thesis topic will be something like "Cartographic Labelling in Real Time Mapping using Web Services. I am ...
1
vote
2answers
29 views

Problem in importing shapefile to Postgis with postgis Shapefile manager

i have a problem with importing my shapefile to postgreSQL, it's a poroblem with the encoding, here's the screenshot: i tried to change encodingin "options" buti get this message: "Failed in ...
1
vote
1answer
34 views

Edit attribute table for shapefiles in folders and subfolders with arcpy?

Continuously to Merge shapefiles in folders and subfolders with arcpy I try to edit attribute table for 20 shapefiles that spread in big a folder and are divided to a lot of sub folders. All ...
1
vote
1answer
35 views

How to create a text file containing layer names in QGIS?

My QGIS ToC contains layer groups and some layers that do not belong to any group. I would like to create a text file containing the name of those layers that do not belong to any group. Is there an ...
0
votes
0answers
17 views

arcmap display full date

I am working with arcmap software. I have a points layer that was created from a gps device. this layer contains a few tracks from the same day (e.g driving to work in the morning, returning home, ...
0
votes
0answers
9 views

mapserver python mapscript WFS RAW POST data

I installed mapserver-6.2.2 and python mapscript in a Openshift gear (Red Hat cloud). But I can't work with WFS RAW POST data. This is my configure line ./configure --prefix=$OPENSHIFT_DATA_DIR ...
0
votes
2answers
35 views

ArcMap keeps crashing whilst using simple C# .NET addin

I honestly have no clue what is causing this. I want to have a message appear that tells me which layers are selected or not. Here is my code: using System; using System.Collections.Generic; using ...
1
vote
0answers
9 views

losing resolution when using FME Webmaptiler

I'm new to using FME and could use some help. I'm trying to take a Geotif image and tile it up into pngs using webmaptiler. The issue I'm having is that the png tiles look pretty poor in ...
0
votes
3answers
45 views

How to calculate the center and radius of a circle based on points

I have a set of lat/long points. I need to calculate the center point and radius of a circle that will encompass all the points. The co-ordinate system used is latitude/longitude as per google maps. ...
3
votes
0answers
23 views

QGIS algorithms do not work on copies of shapefiles?

I'm using QGIS 2.6.0. I'm trying to run various algorithms such as "SAGA/Shapes-points/remove duplicates" & "SAGA/Shapes-Grid/Add grid values to points" through the sextant toolbox. When I run ...
1
vote
1answer
29 views

Merging multiple tables using SQL in CartoDB

I have 5 separate tables in CartoDB each with a varying number of columns, but all containing these 4 columns (the_geom, name, type, unit_code). I want to merge them all into 1 new table and get rid ...
0
votes
0answers
8 views

SQL query syntax for NDVI grid in ArcGIS for Desktop?

I am trying to extract by attribute pixels with a Value >0 (i.e., the vegetation in an NDVI grid file) in ArcGIS. Every time I try to extract by attribute (spatial analyst tools/extraction), my SQL ...
1
vote
3answers
38 views

Remove a layer from TOC in my printed PDF?

I am new at writing Python code so I'm just grasping the basics. I am trying to clip two shapefiles so that they are within the map boundaries. After that, I want to remove the unclipped layers and ...
2
votes
1answer
19 views

Editing polygons simultaneously in ArcMap?

I have two polygons: How can I reshape both Polygon 1 and Polygon 2 at the same time? Will the area of each polygon change automatically in the table after reshaping? I'm using ArcMap 10.1.
1
vote
0answers
26 views

Waiting on AJAX result in main JS function

So .... my main init()Javascript function has these 3 lines: sarea = GetArea(Uname,UIDfield,Table, document.getElementById("Source").value); darea = GetArea(Uname,UIDfield,Table, ...
2
votes
1answer
22 views

Error converting a raster to polygons

When I am converting a raster using the polygonize tool, I get this error: ERROR 4: 'C:/Users/Vitor/Desktop/Cartografia EE_Portimo/COS RASTER/cos_raster_reeditada.tif' does not exist in the file ...
0
votes
0answers
36 views

Tool to create triangle buffer using Python in ArcGIS Desktop?

I want to make a tool to create triangle buffer by python script in ArcGIS, like circle buffer that we use it in ArcGIS Desktop? I need a tool that allows user to input the length of sides of the ...

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