All Questions
156,485
questions
1
vote
0
answers
425
views
Polygon layer only rendered if crossing extent boundaries
I have two MapServer layers that get rendered only if the polygon boundaries are overlapping with the extent boundaries.
If the red lines were below the upper rim of the extent, the layer would not ...
- 423
10
votes
4
answers
3k
views
tiny JS discretization library for choropleth representation
I would like to know if a tiny stat/discretization js library ready to use exists.
I do know about the existence of jStat (which I may explore a little bit more thoroughly), and I know that mapfish ...
- 8,550
4
votes
1
answer
3k
views
Generating SLD dynamically using PHP in GeoSever
I am fairly new to GeoSever and I have a question before I launch into something bigger than me: if I replace the XML code in the SLD style sheet inside GeoSever with some PHP which generates the SLD ...
- 205
12
votes
2
answers
3k
views
How do you find a lat/lon (DMS) on a paper map using a 30cm ruler?
How do you use a 30cm ruler to find DMS on a paper map? The locations I would like to find are the 'corner' points so I can generate an extent based on the four corners.
I have an old paper map (3 ...
- 10.2k
11
votes
2
answers
6k
views
manipulate file geodatabase like an access personal geodatabase?
Is there any way to interface with features, but more specifically their attributes, in a file geodatabase like you can in a personal geodatabase?
Frequently I will just open a personal geodatabase ...
- 1,127
0
votes
1
answer
188
views
Reprojecting Tiles Using PixelBender in a Flex Client
I am pondering the possibility of somehow reprojecting tiles for display in my Flex application using Pixel Bender or something equivalent. The tile cache in question here is not owned/maintained by ...
- 5,671
2
votes
3
answers
1k
views
ArcGIS Package information? [closed]
I'd like to know how deal with the ArcGIS Package information?
I have ArcGIS 9.3.1 and would like to know how to work with map packages, and layer packages.
Also how do I access it?
- 4,113
6
votes
6
answers
2k
views
How do I remove a join (between a standalone table and a feature layer) with ArcObjects?
I already know how to do a table join with ArcObjects, via the IDisplayTable, IMemoryRelationshipClassFactory etc. interfaces. Here are some links to resources that have example code for this:
"...
- 1,143
3
votes
3
answers
3k
views
Convert .dwg file into .dwf file using Teigha tool
I am using teigha tool to convert my dwg file into dwf file. Can anybody help to explain the procudure for the same.
Your prompt reply will be greatly appreciated!
- 31
4
votes
1
answer
519
views
Sort by geometry using INHERITS?
hope everyone's doing well.
I have a statewide point data set (parent table: 600K rows, 500 columns) I need to analyze at multiple scales based on several different spatial divisions. I'll also need ...
- 443
6
votes
1
answer
4k
views
Using Range in Python expression of ArcGIS Field Calculator?
what is the python expression for defining a range of numbers?
I have tried numerous combinations but cannot get a simple range of angles (100 -200) to compute correctly.
Screen shot :
- 1,989
3
votes
4
answers
6k
views
Read KML file with GDAL/OGR for Python
I have file : test.kml and I try to open it with GDAL/OGR (1.6) librairie in Python (2.5).
But I don't succed can you help me ?
This is my code :
from osgeo import ogr
adresse = 'test.kml'
driver ...
- 63
2
votes
2
answers
2k
views
How do I use Oracle Locator's mdsys.sdo_geometry with ArcSDE?
I'm using the Oracle Locator MDSYS.SDO_Geometry type to store my spatial information and then accessing it through ArcSDE. I'm confused about how the precision component of the metadata is used and ...
- 21
11
votes
4
answers
21k
views
Making one part polyline from multipart polyline?
I have a polyline which is divided into multiparts and these parts are not well ordered so that the vertex's ID are not following the polyline's plotting.
This polyline is a representing a bus line ...
- 111
0
votes
0
answers
349
views
Validate Python Fme
i have a problem with my script for convert GDB to Excel.
if s=='xls':
reader=FMEReader("GEODATABASE_FILE")
reader.open(param_filename_gdb)
writerXls= FMEWriter("XLS_ADO&...
user3120
4
votes
1
answer
1k
views
Writing 3D polygon using ArcPy?
I am working on some scripts with 3D polygons using ArcPy (ArcGIS 10). Reading and data manipulation works fine. However, writing the output back into a shapefile does not seem to work, it only ...
- 41
5
votes
3
answers
4k
views
Combining multiple shapefiles in arcgisscripting?
I have got a lot of point shapefiles (r20010101.shp, r20010202.shp, r20020101.shp...). Each of them has the same amount of points at exactly the same location. In a column that is named after the Date ...
- 414
2
votes
4
answers
3k
views
Modify existing library from OpenLayers (ZoomToMaxExtent)
I would like to modify ZoomToMaxExtent.js library from openlayers so as when I click the button the map will display only Great Britain and not the whole world. I am having problems creating the ...
- 133
4
votes
1
answer
1k
views
Webmapping with pgRouting and Mapserver for Beginners
I want to use pgRouting for showing shortest path on hiking trails. I created web map so I need to enable users when they click on start and end point somewhere on hiking trails, that it shows ...
- 4,968
1
vote
3
answers
3k
views
Calculate XY Coordinate with "CalculateField" tool
I used model builder to build a model which can calculate the XY coordinates
and it's perfect!
However, when I export it to VBscript and run it in VBA it crashes....
The error happens at
gp....
- 449
3
votes
1
answer
564
views
Standard Colors for Landcover Maps
I have classified Landsat images into five classes - A variety of Palm, Water bodies, built-up/open area, other vegetation and miscellaneous. I used GRASS GIS for the process and the final classified ...
- 4,739
1
vote
1
answer
455
views
Python console not loading with QGIS1.7-Ubuntu 10.04.2 LTS lucid,
Any tips on how to get the Python console working on Q-GIS (Quantum GIS)? (Its not working from the software's menu.)
System:
Python 2.6.5
QGIS1.7 OS
Linux: Ubuntu 10.04.2 LTS lucid
Error message ...
- 826
5
votes
4
answers
6k
views
Creating Local Cache From ArcGIS Online Basemaps
I am contemplating creating a local caches from the standard ArcGIS Online Basemaps; streetmap, imagery and topo. I need to do this because the environment the web application will be hosted is DOES ...
- 5,671
2
votes
1
answer
540
views
geoserver-cURL-REST error
when I try to create a workspace/layer/store following http://docs.geoserver.org/stable/en/user/restconfig/rest-config-examples/rest-config-examples-curl.html I am getting "System cannot find the file ...
- 1,001
3
votes
3
answers
862
views
In ArcGIS how can I append the number of points that are located inside each individual block groups of the entire US?
I am using ArcGIS 10 and I have two shapefiles; (a) a polygon shapefile of block groups of the entire US, (b) a point shapefile of customer locations throughout the US.
What I want to know if how ...
- 2,097
0
votes
2
answers
1k
views
PHP script for publishing a layer
I want to publish a layer automatically in geoserver. Each layer is a database table in postgis db. I can see the table in geoserver store(already contains some layer tables of that particular db) as ...
- 1,001
2
votes
1
answer
866
views
Drawing in ArcGIS Engine?
I am trying to port over a large amount of code for drawing lines, bitmaps (with transparency), and text onto our map display. Originally it was done using Dynamic Display and IDynamicMap but that is ...
- 275
1
vote
0
answers
734
views
Geoserver Rest folder not found
I am trying to learn geoserver's rest-api following http://docs.geoserver.org/2.0.x/en/user/extensions/rest/index.html.
I have placed rest-2.0.3 jar file in geoserver/webmaps/geoserver/WEB-INF/lib ...
- 1,001
3
votes
2
answers
7k
views
Measure the area of a polygon resulting from the intersection of two other polygons?
How can I measure the area of a polygon resulting from the intersection of two other polygons? If I use the measure tool or open the attribute table for the resulting polygon, it shows me the areas of ...
- 31
3
votes
1
answer
1k
views
OpenLayers GeoJSON Data Store
Background: I have a single geoJSON data object that backs multiple Vector Layers of its features. I do this because the feature data has many attributes and can be presented in many different ways, ...
- 294
11
votes
2
answers
1k
views
Where are the address ranges in OpenStreetMap?
I recall coming across some OSM initiative that was proposing to put US address ranges in the data using TIGER (I think). However, I have seen no such ranges in any of the data I have looked at so far....
- 4,308
13
votes
3
answers
5k
views
Connecting line features and determining the length of the longest line
I have a line feature (see image) representing a river that I created using the Stream_to_Feature tool. The attribute table contains several records representing different lines - the problem is the ...
- 10.6k
4
votes
0
answers
3k
views
Adding shapefile causes ArcMap Drawing Errors (General function failure)? [closed]
I am creating a map that is a hodgepodge of databases, stand alone shapefiles, and a couple image services. Everything seems to go as expected until I add a certain shapefile to the mix. Then all of ...
- 3,655
7
votes
0
answers
337
views
Seeking beginner web mapping advice? [duplicate]
I'd like to get some expert opinions on how to get started in web mapping. First, a bit about my skills, then what I'd like to do.
I've got many years of experience with GIS, mapping, and cartography....
- 181
5
votes
3
answers
1k
views
Does anyone know a function to determine if a Point lies on a polyline?
ArcEngine 10 .Net 4 c#
I'm currently allowing user to select a point on a polyline and creating a point on the line. I am using snapping tool.
I just want to make sure that when the user clicks on ...
- 860
60
votes
11
answers
65k
views
Removing small spaces (slivers) between polygons
I have a set of polygons representing administrative districts. The districts were digitized by hand, and there are small spaces (slivers) between polygons where the polygons should be touching.
How ...
- 711
5
votes
1
answer
1k
views
Geometric Network - Listening to network feature connection changes in the IObjectClassEvents::OnChange event
I need to be able to tell when a particular type of feature, that participates in a geometric network, is having its geometry automatically modified due to the geometric network.
What i mean is that ...
- 1,274
4
votes
1
answer
606
views
Copy text to clipboard with MapBasic
I think the title says it all - is it possible to programmatically copy/paste some text to/from the windows clipboard using MapBasic?
I have found this discussion but it only discusses copying and as ...
- 3,723
1
vote
1
answer
1k
views
Creating a graph from a Field values (VBA ArcObjects)
I have a combobox that shows all fields of a shapefile.
I want to get these values programmatically in a label--Count, Minimum, Maximum, Sum, Mean, Standard Deviation--and populate a graph of the ...
- 27
2
votes
2
answers
2k
views
Mapserver can't write in /var/www/mapserver/log/
I'm executing Mapserver 5.6.4 under Apache2 in a Ubuntu 10.04 machine.
I'm having problems writing log file. In the mapfile, I have:
CONFIG "MS_ERRORFILE" "/var/www/mapserver/log/mylogfile.log"
...
- 1,723
1
vote
2
answers
1k
views
Creating and serving pdf files from ArcGIS server 10.0
I am tasked with sending map data from the Flex client to an MXD then to serve that as a PDF to the client and/or a server side location. Creating the PDF isn't an issue, however, I am having trouble ...
- 4,825
7
votes
2
answers
10k
views
Performing regression analysis between two variables using ArcGIS Desktop?
I have a temperature image (interpolated from climatic point data) and NDVI data at the monthly interval.
I need to do correlation analysis between temp and NDVI.
Is it impossible to do this using ...
- 169
6
votes
4
answers
3k
views
Is there a 3rd party ArcGIS viewer (builder) for Javascript?
Esri provides an ArcGIS Viewer for Flex as well as an ArcGIS Viewer for Silverlight.
Strangely though, there are no plans for a similar viewer for Javascript.
Are there any 3rd parties that have ...
- 25.7k
7
votes
3
answers
42k
views
Defining a Query with Multiple Values
I have been trying by best to create a definition query which would select a group of municipalities from among the many in my state. I have tried commands of all sorts of variations from "Name"='...
- 79
16
votes
3
answers
4k
views
Addressing Memory leak in IFeatureClass.Search (only on SDE with direct connect) of ArcObjects?
ESRI Support say they have reproduced the issue and have opened a bug report (NIM070156).
I have determined that there is a memory leak (in unmanaged heap memory) that occurs when a tool in my .NET/C#...
- 35.6k
3
votes
3
answers
1k
views
How do I convert existing fields to lat and long using the Calculate Field tool?
I am trying to convert my X and Y fields from feet to lat and long. I can easily do this in Calculate Geometry from the attribute table, but I'm needing to use this in a model and Calculate Geometry ...
- 31
10
votes
1
answer
2k
views
How to work within ArcGIS image server export limits?
I need to clip out a region of an arcgis image service that is larger than the export limit. I'm not trying to defeat copy protection or anything of that nature. The data is from a service belonging ...
- 27.9k
6
votes
3
answers
4k
views
Connecting markers by following the roads in Google Maps
I have many markers in a kml file. All the markers are on the roads.
I wonder if there is a way to process the data and connect the markers by following the road? Of course, the markers should not be ...
- 284
3
votes
2
answers
2k
views
Changing Names in TOC Doesn't Update Legend Properly
This is related to an ArcMap add-in I coded up this past week.
I'm trying to rename a layer in ArcMap and have the legend refresh properly. The renaming part is working fine, however I cannot get the ...
- 49
2
votes
2
answers
340
views
Can REST or the ArcGIS API for Flex read VAT tables from a Raster?
When publishing a bare earth DEM that has a VAT table, or value attribute table "A VAT is a table containing attributes for a grid, including user-defined attributes, the values assigned to cells in ...
- 407