Questions tagged [file-size]

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

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How to see the size of individual layers in a geopackage

How can we see the disk size of individual layers that are packed together in a geopackage? I am a big fan of keeping all layers (and their styles) of a QGIS project inside one geopackage only. Its ...
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Reducing DEM raster file sizes in QGIS

How do I reduce the size (or clip to a smaller area) a DEM raster in QGIS using existing tools? I need smaller files for QGIS project transfer into QField.
jamssiwater's user avatar
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Increased raster file size after clipping and uploading to GCS

I have written a script that access cogs on GCS (google cloud storage), clip it with several vectors I have, and then uploading it back to GCS. I thought that the clipped image size should be the same/...
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Determine memory size of map project

I am using QGIS 3.30.1 on a MacBook Pro running MacOS Mojave 10.14.2. I have created a small-scale map (all of North America) on which there are 12 line feature layers, one point feature layer, and ...
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Newly created multipolygon layer fails to save due to large file size

I used the function "Join attributes by location" to join a number of polygon circles (a multipoylgon layer) with the values of the points (multipoint layer) that are "contained" ...
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Exported QGIS TIFF file is much bigger than inputed, even without edits

In using QGIS I have found that when I export a GeoTIFF it is 4x larger (in storage size) than the original TIFF file that I open in QGIS. What would cause this?
Hans's user avatar
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Changing file size when exporting Layout as PDF using PyQGIS

I have a plugin that exports a pdf of a layout. Up to QGIS 3.18 the file size was typically about 2.7MB, since moving to 3.20.1 it has increased to about 17MB for exactly the same layout and data. I ...
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Divide polygon features to reduce feature size

I am attempting to load FCC Mobile Deployment Form 477 Data into Google BigQuery for analysis and combining with other data I am using. I converted the shapefiles into new-line delimited geojsons ...
Nathaniel Lovin's user avatar
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Problem with spatial join of large shapefiles

I want to combine the attributes of five shapefiles into one shapefile using QGIS. Therefore, I used several data processing steps including clipping the five shapefiles to the boundaries of my ...
Lucas_Edenhofer's user avatar
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Why is an original ArcMap-project twice as big as its copies?

I'm currently working with ArcMap 10.7. Therein, I regularly do File > Save a Copy of an existing ArcMap-project to create a copy for another ArcMap version. However, the file size of the original ...
stonebe's user avatar
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Problematic file size after georeferencing in QGIS

I have to georeference a few hundred JPEG maps in QGIS. Each of these maps has an average size of 20 MB. After georeferencing, these maps must be loaded into ArcGIS on another computer, of course ...
MAT's user avatar
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Reducing file size by not storing no-data points

I have to compute sea wave forecast for large period of time. Land information is of no use here. Is there any file format that allows to not store no-data/fill values for land area to reduce file ...
kazik's user avatar
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GDAL retile to create near-uniform file sizes?

I have a 60Gb raster vegetation dataset. I need to be able to access single pixels relatively quickly. At the moment, I am retiling at a fixed size, and saving those, indexing them in Python, and ...
naught101's user avatar
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4 votes
1 answer
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Why are Shapefiles limited to 2GB in size? [closed]

I'm hoping somebody can clarify for me why .shp are limited to a 2GB file size? Having read through the ESRI considerations and technical description, I cannot understand why it exists. Since they ...
pstatix's user avatar
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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. ...
susie derkins's user avatar
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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....
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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 ...
Lutz's user avatar
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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 ...
Li12's user avatar
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6 votes
2 answers
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GeoTIFF smallest bit depth value

I have a GeoTIFF (RGB) 8-bit per channel file that was classified to four classes. Theoretically I could save the file as a 3-bit and make the file significantly smaller. For my application files size ...
icypy's user avatar
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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 ...
Carson MacPherson-Krutsky's user avatar
2 votes
1 answer
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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 ...
Paul_GIS's user avatar
1 vote
1 answer
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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) ...
ipark's user avatar
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10 votes
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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 ...
Shub's user avatar
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-1 votes
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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 ...
Ali's user avatar
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5 votes
3 answers
14k 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 ...
Ali's user avatar
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2 votes
0 answers
521 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 ...
martin-martin's user avatar
-1 votes
1 answer
1k 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?
Steve Bennett's user avatar
10 votes
1 answer
3k 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 ...
user2950747's user avatar
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61 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 ...
tg110's user avatar
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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 ...
joaoal's user avatar
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1 vote
1 answer
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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: [...
Ben's user avatar
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2 votes
0 answers
563 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 ...
Alex D.'s user avatar
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3 votes
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553 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 that I acquired a little while ago. Preprocessed it using sink route detection ...
Moreau Colin's user avatar
2 votes
1 answer
1k 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 ...
Laca's user avatar
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1 vote
0 answers
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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 ...
Leprechault's user avatar
5 votes
2 answers
2k 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 ...
Joshua A's user avatar
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0 votes
1 answer
107 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 ...
Tonny's user avatar
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10 votes
2 answers
1k views

Retrieving size of shapefile in ArcPy?

Is it possible to retrieve the size of a shapefile using python and arcpy? If so, how?
John's user avatar
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2 votes
1 answer
433 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-...
Ahmed Fasih's user avatar
12 votes
2 answers
4k 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 ...
Mathijs's user avatar
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1 vote
1 answer
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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 ...
Anders's user avatar
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3 votes
2 answers
1k 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).
Christy Heaton's user avatar
2 votes
0 answers
2k 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 ...
Mulone's user avatar
  • 147
1 vote
1 answer
1k 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 ...
amishphotoclub's user avatar
2 votes
0 answers
925 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 ...
purelyp93's user avatar
7 votes
3 answers
12k 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 ...
Radek Kukuczka's user avatar
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0 answers
29 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 ...
user28542's user avatar
  • 320
3 votes
1 answer
777 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 ...
der-stefan's user avatar
1 vote
1 answer
1k 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 ...
Simon B.'s user avatar
  • 155
1 vote
2 answers
312 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 ...
László's user avatar
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