3
votes
1answer
34 views

Why is the OSM map itself is not visible in my qgis window?

I'm new in working with QGIS. I have tried to download an OSM map of Rome and its surroundings into my QGIS. As far as I am concerned, I have followed each step which I could find on various ...
3
votes
1answer
127 views

Using Engineering symbols (*.svg) in QGIS?

QGIS looks straight forward except for the symbols or icons. I have created SVG symbols and when I place my pointer to the obvious blank areas in the symbol library a pop-up says that my symbol is ...
2
votes
0answers
14 views

Finding equivalent API-supported data to the 2000 Census

I'm having some difficulty choosing Census datasets for a project that involve various SES measures at the block-group level. I'll be looking at things like median household income and percentage of ...
4
votes
1answer
40 views

Changing value field when applying symbology from layer using Python Add-in?

I have a python addin button that creates a layer file from a polygon feature class in ArcMap. I want to take that layer file and, with user input from a combobox, apply it back to the feature class ...
1
vote
2answers
93 views

Making single polygons from a shapefile

I created a shape file a while ago with several (20+ polygons) in it. I was wondering if there is a way to symbolize these polygons with unique symbols. Basically all I actually want to do is color ...
2
votes
1answer
30 views

Map algebra from files in multiple directories

I'm a rookie in python programming. I want to do map algebra for multiple rasters but these rasters are in different folders. Here's the code ive created so far: #Importing modules import arcpy from ...
2
votes
0answers
15 views

z-index issue with infowindow

I currently have a map where my map div covers 60% of the page and 40% is a fixed Infowindow. My problem happens with cartodb css and its z-index of div.cartodb-infowindow. Currently my information ...
1
vote
1answer
20 views

Erdas Imagine DN to TOA reflectance for SPOT images

I would like to convet DN to TOA reflectance in Erdas Imagine 2013. I see there is a way of doing this for Landsat7 in the Radiometric tab. How can I do this for SPOT2,4,5 images?
0
votes
2answers
69 views

Import shapefiles on my postgis table using R

Using R, I would like to import shapefiles that are in a directory on a geometric table i have on postgresql / postgis. What is the instruction that allows me to do it? EDIT: here is my code to ...
0
votes
0answers
11 views

Testing Android Navigation apps [on hold]

I am working on a navigation app in which I can see my location changing and I follow a definite route. I am facing issues in testing my app , as my position remains static . SO I cannot test it. Is ...
-1
votes
0answers
13 views

How to Importing OSM file into Mysql [on hold]

I've been trying to importing osm file into mysql using osmosis, but still failed, please help me.... Thank before database CREATE DATABASE osm; USE osm; CREATE TABLE IF NOT EXISTS changeset_tags ( ...
4
votes
1answer
81 views

Renaming 1,200 rasters in File Geodatabase using ArcPy?

I've been tasked with renaming a large amount of raster files within a file geodatabase (ArcGIS style). I'm taking weather data which has a name format as such: "G"mmddhhhh I'm trying to add a year ...
1
vote
0answers
33 views

Where can I find “QGIS Training Manual” data? [duplicate]

I can't find data for this lesson in Quantum GIS: 9.4 Lesson: Supplementary Exercise. Can anybody help me?
1
vote
1answer
21 views

Merge polygon based on other line shape file PostGIS

I have a polygon shape file and a line shape file. I would like to merge two polygons which shares the same border along with line shape. Finally the line should be removed in polygon shape file. In ...
-1
votes
1answer
26 views

Most suited Remote Sensing [on hold]

What will be the most suited remote sensing data to use for mapping highways in North America?
2
votes
2answers
31 views

How to add updated tiles to ArcGIS mosaic

I have several hundred aerial imagery raster tiles (in ecw format) that I have loaded into a mosaic dataset. I would now like to 'replace' or 'overlay' an older aerial imagery layer with this dataset. ...
0
votes
1answer
20 views

Gdal_sieve not working?

I'm using the Sieve command within QGIS (Raster > Analysis > Sieve), but when I run the command with any variation of parameters, it completely changes the histogram of my raster data from between ...
2
votes
2answers
69 views

Automated search of misplaced points with Python or Model Builder

I am using ArcGIS 10.2.2. My work is to find points which are misplaced. I want to know if there's a way to automate this using Python or Model Builder? I wish to place this in the attribute table ...
0
votes
0answers
51 views

calculating decimal degrees from coordinates found in an excel table

What is the exact syntax to use when calculating decimal degrees in the field calculator? I know the general formula {i.e. Degree + (minute/60) + (second/3600)} but how do I put this into the gis? I ...
-2
votes
0answers
31 views

Data fusion python code or toolbox [on hold]

I want to synthesis several data layers for finding a probability map. In creating it, i need use this operations in arcgis. Please help me about doing this operations with ArcGIS. How can I do it? ...
2
votes
1answer
42 views

Best Landsat band for forest classification?

Using Qgis and the Semi-Automatic Plugin for Classification, which are the best Landsat bands to use to classify trees species (in central Argentina)? In Landsat 5, 7 and 8?
0
votes
0answers
14 views

Generate tiles of World (Zoom 0-2), Germany (Zoom 2-12), Some Cities (Zoom 12-15)

I'm creating an offline navigation application. I'm using leaflet for displaying the map tiles. Right now I'm creating the tiles using Maperitive. This works great so far. But I can't open bigger ...
0
votes
1answer
30 views

MapInfo Tab Files - Which feature types are contained?

Without opening the TAB within a GIS package, is it possible to determine which feature class it contains? Could the TAB file be open in notepad and assessed for example?
0
votes
0answers
37 views

Exporting Excel to dBase (*.dbf) table gives error? [on hold]

I am trying to export an excel table to a dbf in ArcMap but it returns an error each time I try; what am I doing wrong? Also, what is a better option to use: dBASE or geodatabase table?
2
votes
0answers
39 views

Setting up qgis web client

I have a problem with setting up a qgis web client on remote server. I set it up on localhost and it runs smoothly, but when I done exactly the same on remote server it is just not working, even a ...
1
vote
1answer
26 views

Determine size of screen/map to limit number of markers displayed

I am writing a JQuery Openlayers javascript web application that connects to a API, which exposes a million geo located points plus metrics and information about the points. One metric is a points ...
1
vote
2answers
40 views

Row-crop field boundaries

I'm on the hunt for field boundary coordinates in the US in the form of GeoJSON, a Shapefile or any structured format that I can use to overlay on a map. I've tried looking at the US Department of ...
1
vote
0answers
39 views

Converting table drawn as annotation in AutoCAD to format suitable to link attributes to cables in ArcGIS for Desktop?

I am working on cables and each cable has attributes. I want to link these attributes to the cables in ArcGIS for Desktop. When I open these cables in AutoCAD it appears that their attributes are ...
2
votes
1answer
34 views

CartoD3 chart not displaying - CartoDB

I have tornados table with columns damage,date,month . I used the following code to create a barchart . <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" ...
4
votes
0answers
36 views

arcpy - ascii encoding error when updating field content in SQL Server table

I know there are plenty of posts and blog explanations about unicode errors, but I still can't figure out to handle it in my particular case. So here is my problem: I am writing a Python script to ...
1
vote
0answers
8 views

custom SVG label style - openlayers

My goal is to display rotated labels for roads on my openlayers based webmap. The problem is actually solved (with a custom SVG solution), but i have some problems with the styling of the labels. As ...
2
votes
1answer
28 views

Refering to 0° of longitude/latitude in a range

This is more of a question in diction... In scientific writing, is there a preferable way to write a range, bounded by 0° longitude, in a way similar to "5° W to 10° E" if there is no cardinal ...
1
vote
1answer
26 views

Converting WGS84 points to a 2D x,y point (plotting)

I have been trying to convert the WGS84 style geo-positions to x,y coordinates on a 2D plane. I have looked into many different links, websites, studies and I honestly gave up on finding a plane copy ...
2
votes
1answer
30 views

Atributing fields in arcmap and excel

How do I populate a field in ArcMap (and Excel) with only a specific part of another field's attributes? For example: I want to populate the LATDEG field with only the degree part of a latitudinal ...
0
votes
0answers
12 views

can widget developed by ArcGIS API for flex as an add-in?

I am currently involved in a project needs me to develop a widget using ArcGIS API for flex. It will be integrated to an existing web application. I am confused now because I haven't touch the ...
2
votes
1answer
36 views

PyQGIS - Start/Stop Editing with data Provider - Commiting changes

I want to edit a specific field for a QgsVectorLayer, within a QGIS application. I am facing inconsistent results from my code, ie: changes are not alway commited. Please could someone point me to ...
1
vote
1answer
12 views

OpenLayers feature styling change by the baselayer

How can I have the style of the features on a vector layer depending on the OpenLayers' "base layer"? For example, some base layers are dark images and I need (for the contrast) the features to be ...
-1
votes
0answers
20 views

Importing OpenStreetMap (OSM) file into MySQL using Osmosis? [duplicate]

I've been trying to importing osm file into mysql using osmosis, but still failed.
1
vote
0answers
23 views

Postgis Raster Unions Color Issues

Can someone explain to me what I am doing wrong here as I think I do not properly understand postgis raster bands. I have a set of geometries that I want to merge with a raster and created a raster ...
2
votes
1answer
28 views

Error reading Esri Grid format using GeoServer?

Using GDAL I can extract information from an ArcGRID raster, just by giving the name of the grid folder: gdalinfo -stats grid_folder All the statistics show up. I have tried with many arcGRID files ...
4
votes
1answer
69 views

How do you set the position of a plugin window when you start the plugin?

I'd like to set the position of a plugin's window or dialog relative to the map canvas frame. For example, if I start a plugin, I want it to appear somewhere in the left upper corner of the map ...
4
votes
1answer
24 views

Update value in domain and same should reflect in attribute field

I have a SDE GDB, where i have no. of domains created. we have created domain for state names, which is used by all feature classes to update their respective state name. Now i have discovered that ...
3
votes
2answers
38 views

Looking for Melbourne and Canberra metropolitan suburb shapefiles / ABS coded lists

I am looking for shapefiles or a list of suburb names for Melbourne and Canberra. I have ABS shapefiles, but I need to filter that to end up with only metropolitan suburbs. My shapefile has codes in ...
4
votes
1answer
170 views

How to calculate X and Y projected coordinate in batch processing

I have more than 1000 shape files (all are point features). They were initially in WGS 84. I projected them in UTM. Then through batch processing I added X, Y fields in each table. But all the X, Y ...
4
votes
1answer
30 views

How to read binary rainfall data (*.trm) in ArcGIS for Desktop?

I have some *.trm binary data that is merged Tropical Rainfall Measuring Mission (TRMM) rainfall data. I have to read it through ArcGIS for Desktop to extract rainfall data from this.
3
votes
0answers
52 views

How to calculate percentages using QGIS field calculator expression?

I am new to QGIS. I am wanting to calculate a field using other fields and some operators. Here is my expression: case When "RVM_CAT" = 'B' OR "RVM_CAT" = 'C' Then ("PC1" /100) * "RE_ha" When ...
3
votes
2answers
200 views

How to draw circle of 3 km radius in ArcGIS for ESRI?

I am able to draw the circle but I want a circle of radius 3 kms I have checked all the previous posts. I want to know what is the units of radius in the below code. var radius, circle, ring, pts, ...
2
votes
1answer
29 views

Problem saving added point to GeoServer WFS-T via OpenLayers?

I want to add a point and then with WFS-T, save this to db. I work with Openlayers and GeoServer. saveStrategy = new OpenLayers.Strategy.Save(); wfs = new OpenLayers.Layer.Vector( "WFS Vectore", { ...
1
vote
0answers
22 views

ArcGIS No font options for Character symbol

I can't get the font options to display when trying to use character symbol in ArcMap. This problem is local to my machine only. See screenshot below. ArcMap 10.2.2 & Windows 7 Enterprise 64bit ...
1
vote
0answers
16 views

Contour generation using Interpolation - Correcting edge Effects

I utilised the Interpolation feature in QGIS to prepare contours from a DEM I had generated. Sometimes when contours intersect the edge of the DEM area, they run along the edge for some distance. ...

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