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2
votes
0answers
39 views

Displaying buses from a transport network (newbie)

First of all, I'm noob in this subject so please give me some advice. I'd like to develop something like http://traintimes.org.uk/map/london-buses/#73 but with my own city. Unfortunately our MTA ...
0
votes
1answer
53 views

Copying raster from Raster Catalog

I have a Raster Catalog containing 4 File GeoDatabase Raster Datasets. Each raster is about 150-250 GB. I want to convert these to rasters with .TIFF extension so I can publish it in a map service. ...
1
vote
0answers
104 views

Precision for an FGDB raster dataset?

I would like to know the precision for an ArcGIS raster stored within a file geodatabase (FGDBR format); I can't seem to find this information anywhere in their documentation (apologies if I have ...
4
votes
2answers
98 views

Storage hardware options for large datasets

We are about to organize our data in a centralized spatial data system. The system would provide various services (mainly supporting ftp access, geodatabase editing, and several web mapping ...
1
vote
2answers
248 views

Where to store geodata to be layered over an OSM tile map?

I'm working on a project for which most data can come straight from OSM. But some data is not relevant to OSM and will need to be stored separately then layered over the top. Probably the tiles will ...
20
votes
2answers
550 views

How do I safely store paper/hardcopy maps?

What do I need to consider when deciding how to preserve paper maps safely from the ravages of time? I am trying to understand some best practices when it comes to archiving and storing paper maps. ...
13
votes
2answers
1k views

Mixing geometry types in one PostGIS table

I've faced with the following problem. I have to migrate from Oracle database to PostgreSQL+PostGIS. Currently all geometries of all types are stored in one table and each record contains "lid" field ...
15
votes
4answers
743 views

Why do valid polygons repeat the same start and end point?

In the GIS world, for most modern formats and Standards (e.g., Shapefiles, WKB/WKT, GML, KML, etc.), valid polygons need to have closed linear rings, which is a linestring of coordinates where the ...
3
votes
2answers
178 views

Data storage shared with co-worker [closed]

I would like to ask anyone out there who knows of a good free website that allows me to upload my gis data files to co-worker. Each project I am working on are quite large and would need to upload 1 ...
3
votes
1answer
438 views

Online/cloud storage options for GIS file-based data [closed]

I am currently looking into online/cloud-based storage solutions in general and also for my GIS data which consists of shapefiles, rasters, file geodatabases, and the like (no relational databases). ...
2
votes
4answers
812 views

How do algorithms load pieces of maps?

If the user moves the mouse pointer to the top left corner of the screen, I want my software to auto-load the three tiles that are closest to the mouse pointer. My assumptions are that the smaller are ...
53
votes
7answers
5k views

What are some best practices for managing large amounts of geospatial data?

How do you manage your geospatial data? I have terabytes of data spread out over hundreds of datasets, and have an ad-hoc solution using symbolic links within projects which link back to an ...