Questions tagged [file-formats]

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

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97
votes
24answers
116k views

Converting between KML and shapefile (SHP) format?

My users are sending me point data that were digitized using Google Earth. How can I convert their KML to a shapefile?
21
votes
3answers
10k 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 ...
17
votes
2answers
35k views

Understanding Esri's .asc file?

Reading the ArcGIS help: Supported raster dataset file formats, I read that ASCII Grid file types are addressed with the singular file extension .asc for both 16 bit signed-integer (for discrete data) ...
11
votes
4answers
14k views

How can I transform a georeferenced JPG to a georeferenced TIF?

I have an georeferenced JPG file and a JGW file containing the coordinates. How can I transform it to a georeferenced TIF file and a TFW file? I have tried to save the JPG file as an TIF file in ...
11
votes
14answers
12k views

Which GIS support DXF and/or DWG?

Which GIS support DXF and/or DWG (preferably read&write)? Update: Are there any open source GIS supporting these or similar CAD files? Support of CAD files generally seems to be problematic. ...
6
votes
3answers
6k views

Merging shapefiles with different geometries (point and polygon) to get single layer with multiple geometries?

I want to merge two shape files in which one is of point geometry type and other is polygon type in order to get a single layer containing both points and polygon in a single map.
35
votes
5answers
7k views

Advantages of using spatialite over shapefile? [closed]

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 ...
4
votes
1answer
3k 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 ...
3
votes
2answers
4k views

Converting *.tif file into headerless (flat) binary file?

I am using NDVI files (value range -1 to +1) created from Landsat CDR images to produce a timeseries in TIMESAT software. My .tif file has following characteristics. File type TIFF,Data Type ...
2
votes
1answer
5k views

What is *.pkinfo file?

What is a *.pkinfo file? Google Search results talk about Package Info files and how they contain map documents and layers, so I don't see how this is different from a .mpk file. I also have not ...
18
votes
3answers
2k views

What is the wire format for Google's new vector map tiles?

Google recently released new vector cartography for their mobile maps. I'm curious if anyone here has any insight into the wire format they use for transmission? I've experimented with a few formats ...
6
votes
2answers
9k 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 ...
17
votes
2answers
12k views

Grid vs TIF vs IMG

Grid, TIF and IMG are three formats of raster files. In ArcGIS Desktop, apparently there's no difference between them. What is the difference between these three formats?
7
votes
3answers
319 views

Custom, low-level representation of streets and traffic rules

I'm new to GIS, and I'm still trying to gain an understanding of what can be represented in the various GIS files. Very generally I know(/think) that you can represent points, that lines, polylines, ...
2
votes
1answer
217 views

Coordinate system doesn't contain values in the range -180 to 180 and -90 to 90

I'm creating an android version of a PC program (I've contacted the company who owns the PC program, so it's legal). The program is in the core a GPS, but is used to navigate pre-defined routes for ...
6
votes
1answer
183 views

CRS information not recognized when geopackage is loaded

I am starting to transition from .shp to geopackage data format in QGIS. There are many benefits to the format that give it an advantage over shapefile for many of my projects. However, I am having a ...
5
votes
1answer
812 views

QGIS processing default output vector layer extensions

You can set the default output-extension of a model in processing > options > general. The intermediate transactions in a model are processed in that default file format. After installing QGIS, the ...
2
votes
1answer
281 views

Writing custom Prepare Scripts for Open Data Cube?

How do I write custom prepare scripts for the Open Data Cube format ? The docs say the following: We expect that many new Data Cube instances will require custom prepare scripts to be written. It ...
1
vote
2answers
2k views

Import .cdr file into gis/cad format

I have a corel draw (.cdr) file that I would like to import into a GIS. It is a vector format which I thing has no geographic information associated. I would like to be able to get it into MapInfo ...
1
vote
1answer
3k views

Retrieving 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 ...
7
votes
1answer
2k views

When saving a .qgs file in QGIS, another appears. Is this a backup?

When saving a project file (.qgs), which when executed is automatically loaded with qgis.bat, there's another .qgs file which appears in the same directory of the original project file, although this ...
5
votes
2answers
931 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. ...
4
votes
2answers
12k 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
3k views

Can ogr2ogr read .kmz files? How?

Attempting a run-of-the-mill ogr2ogr process with a KMZ file failed: FAILURE: Unable to open datasource `Rail.kmz' with the following drivers. Is there a trick? (Obvious workaround is to unzip the ....
3
votes
1answer
433 views

Editing date in *.ssf files?

So my trimble TSC1 Pro XRS (bought in 2000) is getting old I guess and it change byitself the date. I collected data this week, but it indicate from 1998. I view this info because I can't apply ...
3
votes
2answers
395 views

Need a vector format that is editable in QGIS and supports >10 character column names

For reasons, I need to create a new column in a vector shapefile with a name longer than 10 characters, and export to mapinfo TAB format. I know .shp's don't support >10 character column names, so I'...
2
votes
2answers
1k 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 ...
0
votes
2answers
487 views

Any plans to change GP toolbox format (.tbx file) to text-based format?

Have you heard if esri has any plans to change GP toolbox format (.tbx file) to text-based format in future? The issue is that we can't track changes in binary tbx file using source control system. ...
0
votes
1answer
1k views

How can I open a georeferenced JPG file in OCAD?

I have a georeferenced .jpg file with the .jgw file containing the coordinates. I want to use it as a background in OCAD. But when I open the file as a background, the jpg file is not georeferenced to ...