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Questions tagged [file-size]

The amount of storage, either logical or physical, required for a file or dataset.

3
votes
1answer
47 views

How to prevent gpkg size increase when I delete attributes?

I have a file, polygons.gpkg that I am using in QGIS. Its original file size is 48MB. When I do nothing except delete a handful of the attribute table's fields, I expect the file size to decrease. ...
1
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0answers
36 views

Cluster spatial - cannot allocate vector

I'm trying use this code for create cluster spatial in R, I get from @ssanch: # example data from the thread x <- c(-22.83982, -23.49961, -27.08745, -22.98890, -19.92278) y <- c(-47.20671, -46....
1
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0answers
51 views

Compress GPX file

I have a .gpx file with a size of about 20MB. I want to load this file into a bicycle navigation application but somehow the file seems to be tool large. Are there ways to compress the file? In QGIS ...
0
votes
0answers
208 views

Might my file be too big to be written with 'writeRaster' in R?

I am trying to write a GeoTiff of a rasterstack that I created after some calculations. I am not quite sure how big the output-file might be. But I assume it has more than 4 GB. I can plot the stacked ...
4
votes
2answers
435 views

Geotiff smallest bit depth value

I have a geotiff (RGB) 8-bit per channel file that was classsified to four classes. Theoreitcally I could save the file as a 3-bit and make the file significantly smaller. For my application files ...
0
votes
1answer
44 views

Reducing filesize for landslide susceptibility map

I have a large .tif file that I would like to reduce to under 15MB (currently 650MB). The file shows 3 zones of landslide susceptibility (see pic below). I am processing it so that I can upload it to ...
2
votes
1answer
57 views

Why are ArcGIS Online Feature Layers so Big Compared to their Source?

I am uploading a file geodatabase to ArcGIS Online that is 40MB when unzipped. The resulting feature layer is 170MB. Why is the feature layer so much bigger than the source data? I don't remember ...
1
vote
1answer
389 views

Shapefile and Database file too large for Google Earth/Accumap

I am completely new to GIS and I had hopefully a simple question regarding how to reduce the file size of my shapefile and associated database file. The files sizes are: Shapefile (.shp file format) ...
4
votes
1answer
752 views

Reducing File Size without losing quality

I am using QGIS and currently have Tiff files that when uncompressed are upwards of 1 GB. When compressed, they are around 250 MB. I am trying to reduce this file size dramatically whether it be by ...
-1
votes
1answer
33 views

Production a shapefile ID : Big record but small volume

How can I generate a shapefile with ArcGIS by converting raster to vector? My specifications file number when and numerous records but small size and low volume of bytes. My method was save image ...
2
votes
4answers
2k views

Reducing file size of shapefile?

I have a shapefile containing 8,000,000 records, with a file size of 5 gigabytes. I would like to upload shapefile onto a server, but my file is too big and it gives an error. How can I reduce the ...
2
votes
0answers
90 views

What exactly is the memory impact on the database when reducing cells size in a Raster GIS?

I understand that the size of the memory of a raster database increases when reducing the cell resolution. I read some about it in the ArcGIS Help. However, I am wondering about the exact relation on ...
-1
votes
1answer
236 views

What is the most size-efficient spatial file format for vector polygon data? [closed]

Surprised I couldn't find an answer to this on Google. For transferring a complete dataset (polygons, in vector form) in a single file, what is the most size-efficient file format?
7
votes
1answer
914 views

Cleaning large Shapefile using v.clean in order to dissolve features?

I'm having real problems cleaning up and reducing the size of a Shapefile which is published by the UK's Environment Agency. It shows the extents of the LiDAR open data they publish: each polygon is ...
1
vote
0answers
40 views

Reducing 1 band raster size [closed]

I have a 1 band 32 bit signed file system raster, with 4 attributes in addition to the value and count attributes with about 47000 rows, that is 55gb. I wanted to reduce the size of this raster ...
4
votes
1answer
199 views

How to avoid very large output rasters using grass algorithms

I use r.cost.points from the GRASS algorithms in QGIS to create a accumulated travel costs map that is based on a friction surface raster. My problem is that the output file is more than 20x bigger ...
1
vote
1answer
2k views

One or more layers failed to draw: [LAYER NAME] There was a problem drawing the shapefile. Drawing aborted [closed]

Using ArcMap 10.1 I Merged multiple .shp layers (each with multiple polylines) into one .shp The resulting layer will not draw, I get the following error message: One or more layers failed to draw: [...
2
votes
0answers
160 views

Why is mosaic dataset such large file? [closed]

I have been trying to export a number of scanned paper maps onto my database, and have been just adding them as raster layers as part of a larger group layer. I georeferenced them, and none of them ...
2
votes
0answers
249 views

SAGA GIS Channel network crash

So, i had this very weird bug while treating my dem data lately. I used SAGA to create flows channel networks on a dem i acquired a little while ago. Preprocessed it using sink route detection and ...
2
votes
1answer
439 views

Upload shapefile size limit

I'm trying to upload shapefile to GeoServer with REST API. It is working with most of the shapefiles, but I have problems when I try to upload a large shapefile. The .zip file is 21.1 MB. Contains ...
1
vote
0answers
211 views

Change pixel size of 30m for 23.5m in QGIS [duplicate]

I need to change pixel size in raster file file with Pixel Size = (28.086057277202915,-28.086057277202915) using Qgis for Pixel Size = (23.951601289061028,-23.952379920305706) what kind of function I ...
5
votes
2answers
1k views

Exporting reduced size PDF in ArcMap?

Currently if I export my map to a PDF in ArcMap 10.2, I end up with a PDF that is like 32 MB of data. Our MS Outlook email system caps us off at 15MB per email, so I end up having to open the newly ...
0
votes
1answer
56 views

Determining of vector dataset single files to specify its size on a disk

I wonder how to get size of disk space that a specific vector dataset occupies on a disk. I didn't find any ogr2ogr util or OGR Python method that can return a list of files that belongs to given ...
10
votes
2answers
517 views

Retrieving size of shapefile in ArcPy?

Is it possible to retrieve the size of a shapefile using python and arcpy? If so, how?
1
vote
1answer
204 views

How large is the entire ASTER Global DEM on disk?

I see from various online sources (including GIS.SE's own How to download the entire ASTER GDEMv2 dataset?) that the ASTER GDEM has 22'000 tiles, each 1°×1° and 3601×3601 pixels (each pixel being 16-...
8
votes
1answer
2k views

Clipping raster-image increases file size

Working with QGIS 2.4.0 Chugiak I have a question regarding the clipping of raster images. I have an aerial picture that I want to clip using the extents of a shapefile. So far so good, I used the ...
1
vote
1answer
35 views

Layer file data duplicated in map document file?

I have a map document file (.mxd) with a size of 0.3 MB. I also have two layer files (.lyr), containing large rasters. Together they are 16.2 MB. If I add the two layer files to my map document in ...
3
votes
2answers
821 views

Techniques for reducing a MapInfo TAB's file size without losing too much integrity?

What are some techniques for reducing a MapInfo TAB's file size without losing too much integrity? The file needs to be reduced for use, not sharing (i.e. zipping).
2
votes
0answers
613 views

Is there limit on size of GeoJSON files that can be handled by QGIS? [closed]

I'm trying to load a GeoJSON file with about 5K features in QGIS, and it fails, saying Invalid Data Source without further details. If I remove features down to 1K, it works. Is there a limit on the ...
1
vote
1answer
758 views

Problems when joining large shapefiles to excel table

I began with a shapefile of 330,000 features, each having already been geocoded (not that it matters I don't think). I attempted to join this shapefile to an excel spreadsheet but of course, Arc ...
2
votes
0answers
556 views

Compression Algorithms output files larger than the originals. Why? [closed]

I'm currently attempting to write a script that will compress a few hundred .tif files. I've tried two approaches, first I wrote a script in Python using CopyRaster_management() function and the ...
7
votes
3answers
7k views

What causes large shapefile file size and can you effectively reduce it?

I have a shapefile that contains all counties of Poland in one shapefile. The shapefile is provided by central cartography agency. The file with counties they provide is around 30MB. The same ...
0
votes
0answers
21 views

image size has been increased after i.atcorr

I have compiled i.atcorr and run for different data sets. The problem is, it is writing the output 4 times of input image. I checked for data types, they are fine. I am not able to catch where ...
2
votes
1answer
393 views

gdaldem output file size explodes

I want to create a color-relief and a hillshade with gdaldem and use them with mapnik. System: Ubuntu 14.04 LTS Server, gdal-bin 1.10. Here are my steps: Download all SRTM tiles from ...
1
vote
1answer
726 views

How big areas/.osm data files can Maperitive handle?

How do the file-size limitations of Maperitive work out? Background: I'm interested in making a map of the whole of Germany. Any pre-generated maps I find online only cover a region at a time, so ...
1
vote
2answers
293 views

cartodb runs out of space *after* shrinking the data in the tables?

I try to work in CartoDB with data I import from CSVs (or xlsx, see below). The data is 24.1 MB in ASCII CSV, 10 MB in xlsx. I spent quite some time shrinking my data's size, and I was happy to ...
8
votes
2answers
3k views

Remove unneeded columns from geographic data file?

I have some GML data that has some unneeded columns in it. I'd like to remove these columns in order to reduce the file size. (To clarify: I mean that the file has many points in it, and each of these ...
14
votes
1answer
3k views

File size inflation normal with gdalwarp?

After using gdalwarp to project and align-to-grid (via -tap) a number of rasters I noticed that the output rasters were significantly larger than the original rasters. A fairly thorough web search ...
1
vote
1answer
205 views

Is there a size restriction on KML layer in esri map?

My web site utilizes ESRI's map and it contains several KML layers. Most of them show up fine except for the ones bigger than ~4MB. Are there any restrictions on KML file size?
7
votes
5answers
9k views

How to get a Leaflet app with a big GeoJSON file to work on mobile devices?

I have a leaflet app which displays a GeoJSON file as a layer. It works fine in the web browser. On the mobile browser it starts up, but quits after panning around on the map. I think the reason for ...
1
vote
2answers
2k views

OpenLayers: constraint a map extent and fit a div

I need to display a map with a world extension -18,-90,180,90. I want the map on the initial view to fit in the div. I tried to define the div proportionally to the map extent, but it does not work: ...
22
votes
5answers
8k views

What makes a MXD file size larger and how to decrease its size?

I know that MXD contains information about layers, symbology and configuration of default tools. I have a few that are exceeding 50 MB and are starting to take a while to load up. What are some of ...