A standard way that information is encoded for storage in a computer file

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21
votes
5answers
2k views

What are advantages of using spatialite over shapefile?

I found spatialite more useful than shapefiles as it does not have the limitations of shapefile and it is also portable. Many people here use shapefiles to exchange data and even the experts do not ...
0
votes
1answer
2k views

DTED Level 3, 4 or 5

Does the specification for DTED 0 - 2 also apply to 3 - 5? I know the finest resolution supported by spec MIL-PRF-89020B is 0.1 arc-seconds which I think would barely cover up through DTED level 4, ...
0
votes
1answer
89 views

Issue with `-sds` naming convention in gdal_translate

I'm converting ~100 .hdf files to .tiff using gdal and getting some unfortunate naming conventions when using -sds for %A in ("...\*.hdf") do gdal_translate -of GTiff -sds "%A" "%A.tiff" However, it ...
1
vote
1answer
437 views

Import GPS data (text documents files) to QGis

I want to import GPS data (text document files) in to Qgis, what file format are you suppose to use ?
0
votes
1answer
273 views

how to export mdb to dgn file in qgis

I am having an (.mdb) file .I want to export this file to (.dgn) format .How can i do this in Qgis ? Is there any plugin available ?
0
votes
1answer
304 views

3D Raster's and Geosoft Montaj/Target, Leapfrog, GoCAD [closed]

I'm trying to figure out what the best format to serve 3D images inside our company. Specifically georeferenced Tiff's that have been placed in 3d space with Geosoft Montaj. We use ArcMAP ...
1
vote
1answer
184 views

Which application generates *.MAG, *.MOB and *.CAR files?

I have following type of files (I have tried FME too.I think they are DGPS generated file?) ".MAG" , ".MOB" and ".CAR" extension files many more ".SES" ,"ERR", "LOG" several I have attached files ...
7
votes
1answer
682 views

Can QGIS projects be opened in ArcGIS for Desktop?

I am about to start a project with a number of people for a nonprofit organization. I am wanting to create the files in QGIS, but some of the people that I am working with are city officials and might ...
3
votes
3answers
299 views

Which data formats can store Bézier curves?

I've heard that ESRI .gdb can. Are there other databases or file formats that can as well?
3
votes
2answers
4k views

How to convert .geotiff --> .tiff?

How to convert .geotiff files to .tiff files (ordinary plain images)? Basically, I have cropped the image to a rectangle of interest and knowing its left-lower location and having chosen the pixel ...
2
votes
2answers
2k views

How to open the Electronic nautical chart S-57 data?

Anyone know how to open the Electronic nautical chart S-57 data by using GIS software e.g. Arcview, QGIS? and converted it to general GIS / CAD formats. Thanks.
2
votes
2answers
96 views

Raster format to read with python

I currently have a DEM raster stored in an ESRI geodatabase. I've been asked to create a purely python (e.g., no arcpy functions) program that works with the values. Therefore, I need to convert the ...
1
vote
0answers
1k views

retrieve some info from GRIB2 file with JAVA

I've just started parsing some info inside GRIB2 file with NOAA weather forecast, and I am realizing this task is not as easy as I could think 'a priori'. I need to process some info inside JAVA ...
4
votes
2answers
245 views

What format is this data in?

I ran into a file today that is in a format I'm unfamiliar with, and I'm hoping that someone can identify it. The file extension is CTZ, but the only file type I found on Google with that extension ...
5
votes
3answers
1k views

What is a simple binary raster storage format which ArcGIS can read?

I have a C++ program that manipulates raster digital elevation models. I have been using ArcGrid ASCII format for results. It is simple to code and gets the job done, but it necessitates a decimal ...
2
votes
1answer
638 views

Can you explain this WKT multipolygon format?

I am confused by the output I'm getting from ogr2ogr when converting a shapefile to WKT. What I'm expecting to see is something in the form below (from Wikipedia): MULTIPOLYGON (((40 40, 20 45, 45 ...
3
votes
3answers
222 views

E00 file structure?

I am trying to write a java application that reads and visualizes data from E00 file. I cannot find any sources describing what is the structure of an E00 file and also what information does it ...
4
votes
2answers
82 views

How to store and edit data with a defined topology using open software and formats?

I'm looking for a way to store and edit spatial data that preserves topological information. In my concrete application, I need to represent triangular meshes, which consist of unique nodes and ...
0
votes
1answer
274 views

multispectral images (Band Sequential format)

How can I create a multispectral image file (in band sequential (BSQ) format), from several 1-band images, using GDAL libraries? I work with C++ language. Thanks for your attention.
1
vote
0answers
115 views

'File is too big' error when uploading QGIS Plugin

I have written a simple QGIS plugin which zooms the map canvas to a user specified UK postcode. I would like to share the plugin but the csv file, which contains stripped down OS Code-Point open data ...
1
vote
0answers
32 views

Suggestions for vector format for polygons

I am using two polygon tables in postgis (A and B ). I need to make a vector file that incorporates information of the overlapped polygons B intersecting each polygon on (A). I can make a single ...
14
votes
1answer
549 views

The next big thing in standardized spatial data exchange format?

I remember reading something a few months back, in the latter half of 2012, about a coordinated group effort to design a new standard for sharing geographic / spatial data. It has or aims to have the ...
0
votes
1answer
449 views

How to read/write a/from a file in javascript with prototype.js/jQuery.twFile support OR anyotherway

I want to write my data into a file from OpenLayers, I have gone through Prototype.js and jQuery.twFile.js or anyother way to write into a file.
3
votes
0answers
33 views

Library for parsing scientific PDS files?

Does a library exist for parsing the PDS files that scientific planetary data gets shipped as? For example, here's a link to to the lunar topographic data from the Lunar Reconnaisance spacecraft ...
19
votes
5answers
33k views

Can I convert a kmz file to kml?

I have a kmz file. Is there an easy way to convert it to KML? Can I just "unzip"?
3
votes
2answers
404 views

ENVI BIL file algorithm logic

I have a 6 band Landsat image, RGB and 3 NIF bands. As far as the Band Interleaved by Line (BIL) method goes, the resulting image should have, and I quote ENVI manual: the first line of the first ...
11
votes
1answer
2k views

How to access feature classes in file geodatabases with Python and GDAL?

I am trying to access a vector dataset in a ESRI File Geodatabase using Python + GDAL. I have successfully compiled GDAL with the file geodatabase API. The FileGDB driver is working correctly since ...
3
votes
0answers
125 views

How to view Esri GRID format file in wxpython file browse window? [closed]

I'm trying to browse for all kinds of vector and raster data using a filebrowsebutton. The problem is I don't know how to let the browse window see the Esri GRID files (which contains a folder and a ...
3
votes
0answers
272 views

GFS SIG/SFC file format of siganl.gdas/sfcanl.gdas analyzing/decoding problem

I am creating a database from datafiles. I encountered many fails and errors, which I have already fixed (also with the help of this Q&A web). Now I am stucked a bit in decoding of 6 files because ...
2
votes
1answer
112 views

Error while trying to upload a .bsq file to the geoserver

I am trying to upload a .bsq file (ENVIHdr Coverage Format) to the geoserver. While doing this I got an error message. I am using the "GDAL" Extension for the geoserver. The error message is: "Could ...
10
votes
2answers
2k views

Grid vs TIF vs IMG

As the title suggests both of the above three formats are raster files. In ArcGIS, apparently there's no difference between them. So what's the difference between these three formats?
5
votes
3answers
429 views

In what data format should I export a (lat,long,alt) or (x,y,z) grid to be compatible with the largest number of GIS software?

I am new to GIS and developing an application that generates a 3D grid with (latitude, longitude, elevation) or (x, y, z) metric triplets, and I would like to add an exporting feature that ensures ...
9
votes
3answers
2k views

Advantage(s) of using underscores in ArcGIS file naming conventions?

In an introductory GIS course, it was insisted that all spaces within file and folder names be replaced with underscores. Why is this taught? Is there a clear benefit of doing so?
3
votes
1answer
2k views

How to open or import .sdc files in QGIS?

I have some .SDC files i want to look at but i dont have arcview installed. is it possible? i couldnt even find a software that does sdc to shp conversion. any idea? i am using qgis 1.7.4 on both ...
2
votes
2answers
574 views

How do I batch export maps for sub regions of a dataset with qgis?

I have a national level dataset consisting of polygons, polylines, points and rasters. I would like to export a map for every sub region (border defined by a polygon shapefile). Is there a simple way ...
1
vote
2answers
5k views

Converting TAB to MIF / MIF to TAB

How I can export (import) data from TAB format to MIF and vice versa?
3
votes
2answers
1k views

IDRISI .vec file translator to ESRI shapefile format?

I've recently got hold of almost 20 years old IDRISI .vec files which I'd like to convert to ESRI shapefile. I've been struggling to find any translator for this file format so far. Does anybody know ...
3
votes
1answer
166 views

rgb2pct.py increases size of file 20 fold!

I wanted to reduce the number of bands of a tif file from 3 to 1... I used this command rgb2pct.py -n 256 fnp_braunschweig.tif fnp_bs.tif and it increased the size from 31mb to 778mb I actually ...
4
votes
2answers
2k views

How to read this GRIB data [closed]

on this open FTP server (ftp://ftpdatos.aemet.es/modelos_numericos/hirlam005_peninsula/) you can find HIRLAM models from the Spanish meteorological service. The documentation in the LEEME files (in ...
5
votes
2answers
1k views

60GB .gdbtable file in my file geodatabase – what is it, and can I delete or make smaller?

The title says it all really – I have a single file named 'a0000000.gdbtable’ in my default file geodatabase that is 60 GB in size. I have a number of other files with .gdbtable extension that aren't ...
11
votes
3answers
2k views

Where can I find country borders data in human-readable format?

I'm trying to obtain some data representing the borders of all countries in the world. This data doesn't have to be very precise, it is to draw the countries on a computer screen. I did a bit of ...
8
votes
2answers
153 views

File naming for Enterprise GIS database?

I'm designing the guidelines for an Enterprise GIS database. Part of this database will include customized geoprocessing tools using a variety of software. I'm interested in knowing whether anyone ...
1
vote
1answer
542 views

KML to Dat Converter?

Are there any free KML to DAT(destinator compatible) converter available ? I tried to use global mapper but was in vain. Also used ITN converter but the line was converted to points.
14
votes
4answers
746 views

Most pervasive GIS formats?

Where can one found out what the most pervasive GIS formats are? For example, from the GIS file formats Wikipedia page, there 4 broad categories, each with many popular formats. Raster formats (13 ...
1
vote
3answers
100 views

Looking for a website to produce a file using UTM or LL or LL to UTM or general

Is there a website that allow me to upload my GPS file from UTM to lat and long to produce a new output file ? I am looking for one to run a batch a list of UTM or LL to converstion them in either ...
15
votes
5answers
1k views

Speed of various raster data formats

I'm having trouble locating any discussion or comparative benchmarking of different raster file formats (e.g., for use in data analysis in R). Does anybody have any insight into why particular formats ...
3
votes
2answers
275 views

ArcGIS Desktop - Web Services Definitions

Aside from .LYR files, is there a file format (preferably open) for defining web service endpoints for Arc products? For example, if I publish a WMS feed, can I provide a downloadable resource for ...
4
votes
2answers
523 views

What generation of the MrSID format is supported by ArcGIS 9.3?

This is probably old news to some, but I just learned that MrSID (.sid) files have different 'generations' of file formats - so there are MrSID Generation 2, Generation 3, and Generation 4 files. ...
2
votes
2answers
6k views

How can I export county level data in a .shp file to a text (csv) file in ArcMap?

I have a shape file created as per the answer to my previous question, which includes county level means for each county in the US. How can I now export this data in a .csv file, e.g. with just the ...
3
votes
3answers
1k 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!