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Questions tagged [file-formats]

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

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114 votes
23 answers
143k 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 and vice versa?
TroutSlayer's user avatar
  • 1,363
5 votes
1 answer
1k views

Configuring lidR catalog to overwrite raster output (with different extension)?

I have a small issue with configuring the lidR package for parametrizing the extracted raster files with grid_metrics() function. My question is how to set in the catalog options that: be able to ...
komazsofi's user avatar
23 votes
2 answers
46k 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) ...
Andre Silva's user avatar
  • 10.3k
13 votes
4 answers
20k 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 ...
Jonas's user avatar
  • 2,231
11 votes
14 answers
15k 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. ...
8 votes
3 answers
12k 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.
user23005's user avatar
2 votes
1 answer
9k 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 ...
user avatar
36 votes
5 answers
9k 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 ...
neogeomat's user avatar
  • 8,380
16 votes
4 answers
24k views

Explaining difference between shx and shp files of shapefile?

I am searching for a more in depth explanation of the differences in shp and shx files to little avail. I mean beyond the 'shp contain geometry - shx contains an index of the geometry'. The reason I ...
Maggie's user avatar
  • 401
11 votes
3 answers
17k 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.
wing suet cheung's user avatar
5 votes
1 answer
3k 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 ...
PieterB's user avatar
  • 5,287
5 votes
1 answer
4k 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 ...
yair suari's user avatar
4 votes
2 answers
7k 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 ...
Laxmi Karki's user avatar
18 votes
3 answers
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 ...
Michal Migurski's user avatar
18 votes
2 answers
16k 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?
user's user avatar
  • 1,337
11 votes
2 answers
4k views

GDF -- Can anyone suggest some good reading?

Can anyone give me a nutshell explanation of the Geographic Data Files format, or post a few URLs I might find enlightening? I get the sense (although I'm not sure) that GDF implies building ...
Dano's user avatar
  • 2,378
7 votes
2 answers
13k views

Converting .geotiff to .tiff

How do I 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 ...
jjepsuomi's user avatar
  • 345
7 votes
1 answer
3k 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 ...
Joseph's user avatar
  • 76k
7 votes
3 answers
364 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, ...
John Berryman's user avatar
6 votes
1 answer
2k 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 ...
Kingfisher's user avatar
  • 2,314
6 votes
2 answers
6k 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 ....
Steve Bennett's user avatar
5 votes
2 answers
1k 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. ...
Timothy Michael's user avatar
4 votes
2 answers
15k views

Converting TAB to MIF / MIF to TAB

How I can export (import) data from TAB format to MIF and vice versa?
Loom's user avatar
  • 415
3 votes
2 answers
476 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'...
willidiots's user avatar
2 votes
1 answer
287 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 ...
Daniel Kvist's user avatar
2 votes
2 answers
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 ...
James's user avatar
  • 23
2 votes
1 answer
921 views

QGIS 3.16 with AutoSaver plugin: Renamed bak-files were not opened correctly or just as a blank project, respectively. (Win 10)

Though my current QGIS-project was not saved in that very moment, yesterday evening my Win 10 decided to run an OS-update and shutted down. 'No problem', I thought because of having installed the ...
jaysigg's user avatar
  • 507
2 votes
1 answer
749 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 ...
pLumo's user avatar
  • 6,519
1 vote
1 answer
6k views

Why does QGIS save a QMD file when you export layer as KML?

I was going to delete all the QMD files but would like to know what they are for before I do in case there is a critical reason for the file(s) being produced. I know they contain Metadata but what ...
Vic's user avatar
  • 431
1 vote
1 answer
5k 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 ...
elguime's user avatar
  • 61
1 vote
2 answers
4k 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 think has no geographic information associated. I would like to be able to get it into MapInfo ...
user avatar
0 votes
2 answers
640 views

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

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. ...
Remigijus Pankevičius's user avatar
0 votes
1 answer
2k 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 ...
Jonas's user avatar
  • 2,231
0 votes
1 answer
1k views

Listing file formats to represent georeferenced 3D data? [duplicate]

I am looking for an overview of file formats that can store geo-referenced 3D geometries. There are no further requirements such as texture support, etc. I have found the following formats so far and ...
Simon Fromme's user avatar