20
votes
2answers
1k views

What projections should I use to make my own Globe?

Searching for an answer to this question, I found instructions posted by Gulf of Maine Research Institute showing how to create a globe. Using manual methods ... What approach would I take to ...
0
votes
1answer
578 views

How can I change mouse cursor while it hovers over the map in Oracle Mapviewer

I'm using Oracle Mapviewer. I want to switch mouse pointer from default to crosshair when user enters "Interactive mode". I'm developing in GWT and tried do do something like this: public static void ...
6
votes
5answers
5k views

How to load Shapefiles into a remote PostGIS db using command line?

Can we import a Shapefile from a system which doesn't have PostgreSQL installed (client machine) into a system having PostGIS installed? I am getting problem with 'shp2pgsql' and 'psql' since both ...
6
votes
2answers
2k views

Does google maps use elevation to calculate travel distance?

For example, lets say I have two parallel roads with starting point and ending point 1 mile apart. The left hand road is as flat and straight as an arrow. The right hand road is also ...
6
votes
2answers
1k views

calculate average slope along a line

I have a slope layer and I want to calculate the average slope along a line. This line isn't necessarily straight (e.g its a route, I would like to be able to input geographic coordinates along that ...
3
votes
1answer
1k views

How to batch export layers to kml in Arcmap?

Is there a way to export layers to KML by altering the layer to KML tool to have more than one layer input?
7
votes
3answers
2k views

Why do we need Mapserver/Geoserver to present data from spatial database to web browser?

I was trying "How I set up GeoServer on an old machine" and By @iant I was setting up Tomcat and all. I suddenly had a question why we need Mapsever and Geoserver? Can these server pull data from ...
10
votes
5answers
620 views

Where can I find a high quality real globe of a decent size without axis?

I'm trying to find a physical globe of a high map quality that doesn't have any axis or bearings as the axis mounted on standard desk globes completely obscures the arctic regions. High-quality map ...
3
votes
1answer
280 views

Is it possible to simplify orthogonal polygons with OpenCarto Java Library?

I want to know if simplification of orthogonal polygons can be done with OpenCarto Java Library. If yes, does it have any API documentation? Cheers, Sanjeewa
0
votes
0answers
629 views

How to draw Sprite on Graphics layer?

I want to draw sprite on Graphics layer like this: var sp:SpriteVisualElement = new SpriteVisualElement(); sp.graphics.beginFill(0x00ff00,1); ...
1
vote
0answers
200 views

Why do FusionTable layers sometimes not work / slow down?

Fusion tables layers are great. I have uploaded some data and polygons of areas in Europe and most of the time they respond very fast. First thing in the morning (after prolonged inactivity I ...
5
votes
1answer
804 views

How to create a routable road network from Ordnance Survey data?

I've been following the "Beginners Guide to pgRouting" in an attempt to create an in-house application that provides drive-time isochrones. I have a server, postgreSQL and PostGIS and pgRouting - no ...
0
votes
1answer
653 views

How to calculate the UTM-Latitude-band?

I have to convert a coordinate from UTM to MGRS. I think I have the most of it covered, but I have some difficulties to calculate the correct Latitude-band. How can I decide which band the coordinate ...
19
votes
4answers
1k views

How to generate schemas of GIS hardware / software / workflows?

Quite often I find myself in a situation where I need to explain hardware or software GIS infrastructure to people with no or limited knowledge of GIS. Or give an overview of geoprocessing tasks ...
0
votes
2answers
1k views

Correct SQL statement in FME?

I am trying to write SQL statement in WHERE Clause FME in Navigator but it does not work. WHERE Clause: NAME IN SELECT CONCAT(''$(',SELECT REPLACE ('Roman Ann Jack',' ',','),')'') This sql code ...
2
votes
2answers
169 views

Understand and use user provided file structure

I have at my disposal a folder with data provided to me by a person that knows nothing about GIS. I have the impression that its file structure was generated by some esri desktop product. I have only ...
2
votes
0answers
568 views

How to limit viewing to map boundary on Android? [closed]

I have an offline map of a city displaying on Android. Since my map is just small, when you scroll beyond the the boundaries of the map you see only a gray screen and you will probably be lost and ...
1
vote
1answer
268 views

Can I create OGC Services via Geoserver automatically?

I am new to GeoServer and wonder how I can create OGC Services via Geoserver automatically. I have to publish my data (Shapefiles) with a Java program as OGC Services. How can I do that? BTW: I ...
1
vote
1answer
938 views

ArcGIS - VBA - How can I create perpendicular polylines of a specified length that retain the attributes of the original polylines

i, I am using ArcGIS 9.2 and am desperately trying to create perpendicular polylines to existing polylines that I have. I would want the perpendicular lines to cross the original lines at their ...
0
votes
1answer
332 views

IUniqueValueRenderer with three fields

I have found some ArcObjects code to get unique values on one field for a IUniqueValueRenderer but I can't conceptually wrap my head around how to do that with 3 fields. Would this be .Net code or is ...
2
votes
3answers
612 views

Select “interior” lines of a polygon-to-line layer

I have a polygon featureclass that has adjacent features. Using Arc10, I am turning those polygons into lines using the "Featureclass to Lines" tool. Now I would like to select ONLY THE INTERIOR ...
2
votes
2answers
200 views

Moving data from columns in a table to rows by a key field?

I would like to shift data found in a column to a row by Key field. I have a table, within a geodatabase, set up similar to what's below. KEY_ Value 123 Yellow 123 Blue 456 Red 456 ...
2
votes
2answers
2k views

How to I find the nearest line to a point?

I am new to building custom ArcObjects, and am looking for a custom python script for arcgis version 10 that will loop through a point shapefile to find the nearest line segment of a line shapefile ...
7
votes
3answers
3k views

How to find nearest neighbors between two tables with point locations in SpatiaLite?

I have started playing with SpatiaLite today and already stumbled upon a problem. For each point location stored in tableOne I would like to select one, nearest (linear distance) point from tableTwo. ...
3
votes
3answers
374 views

How to preserve ordering of results with the wrapper functions

When running SELECT * FROM dijkstra_sp('ways',232, 421); I get the result ordered by gid, rather than by the order for reaching the target by starting at the source. What is the reason for that ...
3
votes
3answers
5k views

Why do ArcToolbox tools give ActiveX error?

I work with ArcGIS 9.3. When I try to run any ArcToolbox tool I receive the message: Window Internet Explorer (Title of the Window) "One or more ActiveX controls could not be displayed because ...
1
vote
0answers
524 views

QGIS Layer Properties Field Tab

When I setup my layer properties I selected some of the attributes to be hidden on the Fields tab. I would like to change the EDIT WIDGET from hidden to a different function however some of them are ...
4
votes
1answer
2k views

How do I add a hyphen to the Field Calculator to merge 2 columns?

I am trying to build a field calculator expression to merge two columns into one. I am looking for the word that makes it a range. Example: I have 2 columns in elevation, From and To. I want to ...
5
votes
1answer
214 views

Reading an Existing Join

Confused again. I was finally able to run ArcCatalog and create a join in my map document (I will do the deed programmatically eventually) but I was interested in how a join looked once it was ...
4
votes
1answer
225 views

Removing a Table from several MXD-Files using ArcPy

I'm trying to remove a certain Table (xlsx-File) from some MXD-Files using python, but I can't finguring out how. I tried the code sniplet for removing: import arcpy, os from arcpy import env ...
6
votes
5answers
3k views

Working out the coords of a square x miles from a center point

I am trying to create a x mile square (or circle) around a central point, where all sides of the square would be x miles from the centre. I need the 4 corner coordinates. It is scrambling my brain ...
7
votes
4answers
9k views

How to display mouse position as tooltip in OpenLayers?

I want map coordinates as mouse over effect in OpenLayers. I am using the following code, however it is showing pixel coordinates: map.events.register("mousemove", map, function(e) { ...
0
votes
1answer
741 views

Mapinfo incorrect polyline (boundary) map to region conversion

How to solve issue regarding incorrect boundary to region conversion? I have boundary map plotted on cosmetic layer when I convert it to region it results in line with overlap to other region. The two ...
6
votes
3answers
979 views

Is it possible to reference data using mapped network drives instead of UNC path in arcgis server services?

Has anyone managed to create a service using datasets referenced via a mapped network drive letter on windows? ESRI support claims it is not "supported", but I want to make sure it is actually not ...
4
votes
2answers
635 views

How to automatically email interim results from model builder?

I want to get model builder to email me the results of processes at certain stages so that if there are issues I can remotely login and deal with them as I do with python scripts. I have a python ...
46
votes
8answers
2k views

One dimensional map of the world?

Bit of a strange question but hope this is OK to ask here. Has anyone heard of a '1-dimensional' projection of the world map - that is mapping all the points on the globe to a single line? I was ...
5
votes
2answers
301 views

Can I split up v.in.ogr into multiple v.clean commands?

I'm trying to load a large set of polygons into GRASS with "v.in.ogr" and am running out of memory at the "Break Boundaries" stage. I'm wondering if I can break into steps all of the different things ...
8
votes
1answer
544 views

What options are available for free Web Processing Service (WPS) client?

A number of products seem to be implementing the server side of the OGC Web Processing Service (WPS 1.0.0) and these are listed here. However, for the client side there are fewer options. Has ...
8
votes
1answer
512 views

Why does GRASS eliminate polygons when using v.generalize?

I am facing a dilemma while trying to use v.generalize to simplify polygons which are similar in size and structure to US Counties or States. Often, I lose polygons from the data set after running ...
1
vote
1answer
498 views

How to calculate oblique photo scale?

Is it possible to calculate oblique photo scale by given vertical photo scale ? I mean is there any kind formula relation between them or maybe is it possible to calculate rough approximation of ...
7
votes
4answers
1k views

Rename postGIS table and updating the GeoServer?

I want to rename one of my postGIS tables. However, when I do this by applying a simple ALTER TABLE old_name RENAME TO new_name; The spatial data, as I understand it, isn't updated with the new ...
5
votes
1answer
2k views

How to add a print function to GeoExt MapPanel?

I´m trying to add a print function to my GeoExt MapPanel, using the following code: bbar: ["->", { text: "Print...", handler: function() { ...
2
votes
0answers
110 views

Change MADtedLayer renderer

This question is relative to a past question of mine at Rendering raster layer from DTED based on height color map (that remained unanswered), so if you believe that I should merge those two, let me ...
2
votes
3answers
370 views

List layers in directory .Net ArcObjects or plain .Net — C# preferably

Any code samples to list arcgis layer files from a directory so they can be looped over?
2
votes
1answer
358 views

Is PPDM Lite still available as a Geodatabase template?

I have been looking for a Geodatabase template that conforms to the PPDM Lite standard and believe that one was previously available here. However, that page no longer exists and no Geodatabase ...
0
votes
0answers
596 views

ARCSDE; creating new geodatabase in database servers in arccatalog

I use arcsde 9.3. I want to access a geodatabase on mobile. when I want to create new geodatabase in the list of database servers in arccatalog the error is "error creating geodatabase no arcsde ...
0
votes
1answer
259 views

Trouble with Request URLs sent by QueryPanel.js

I use the GeoExt QueryPanel, which I got working so far. I configured an osgeo proxy on my Apache Server, I use the override-ext-ajax.js and have the OpenLayers.ProxyHost = "/cgi-bin/proxy.cgi?url="; ...
0
votes
1answer
188 views

How to add close action to buttonpad and dialog?

I am making mapinfo addon and I am having problem with close action of buttonpads. How to add close action to dialog and buttonpad so that we can execute certain action on close of buttonpad or ...
3
votes
4answers
1k views

Where can I find free Bathymetric data for Indian Ocean?

I am looking for bathymetric data, to place in a map of India for visualization only. I don't really need very high resolution data, since the the map will be at a very small scale: Maybe 1:1Million ...
28
votes
4answers
971 views

Is there GIS Video “that Mom can understand”?

Working as a professional within the GIS discipline, I often find it challenging to describe to people what GIS is (in a face to face conversation). Telling them that GIS stands for Geographic ...

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