Questions tagged [memory]

memory is the process in which information is encoded, stored, and retrieved.

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19 views

pyqgis 2.18.16 - Segmentation fault error at 2nd run

When use pyqgis+python for auto-mapping, I encounter a tricky Segmentation fault (core dumped) error, at the 2nd run of the program. I checked previous similar post but not able to fix the issue. I ...
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27 views

How to increase memory and CPU allocation for ENVI Graphic User Interface (GUI) Classic

Long time reader, first time writer. I want to know if there is a way to increase the memory and CPU used/allocated by ENVI 5.5 classic in the GUI. Both 32 and 64-bit versions are only using around 20%...
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18 views

Memory management in offline routing with n waypoints?

I am trying to build an offline routing system with a map database on a portable Android device. Since I am still doing some research, I am stuck on what I think is a fundamental problem. To find the ...
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23 views

ArcGIS Modelbuilder model clogs up memory?

I have a model in which a zonal histogram is computed of each line in a feature class, showing the amount of cells each line intersects in a raster file. After this, this column is joined to a table ...
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1answer
39 views

How to free the memory of return value of OGRGeometry::Buffer()?

I have in C++ (gdal 2.3.2) OGRPolygon poly; OGRGeometry* geom = poly.Buffer(1e-12, 1); now how do I free the memory allocated for geom after done using it?
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1answer
54 views

Using Hyperion with Google Earth Engine

I am trying to use Hyperion Data for my project, unfortunately even loading the Image Collection of Hyperion exceeds my maximum 2.5 GB Data Storage. Hyperion has a revisitrate of 200 Days, so a one ...
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48 views

GRASS GIS Shortest path: Limit on number of calculations?

I'm trying to compute the shortest path between about 10'000 location-pairs. I've prepared my vector map as described in the documentation. I can calculate shortest path on about 1'000 location pairs ...
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1answer
51 views

Pros and cons of saving data on a memory stick [closed]

I have just about reached the capacity of my laptops internal Solid State Hard Drive (Sandisk SD8SNAT-256G-1006) and I looking for some additional storage without having to buy a new machine. You ...
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66 views

Exporting Layer to Feature Class is Incomplete without Error

I have a CSV of 1.2 million records that I want export to a GDB as a feature class. I've done this numerous times, but this was before upgrading from 10.5. Steps: Add CSV Display X/Y table Export to ...
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28 views

Using destructors in PyQGIS?

Related to my Problem described in PyQGIS memory issues, I'd like to try using destructors for QgsGeometry and other classes. I dont get how to use them though. According to https://qgis.org/api/2.18/...
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106 views

PyQGIS memory issues

I have some big problems with the memory usage of my standalone PyQgis script based on QGis 2.18 and run on ubuntu/linux (happens also on Windows 10 though). I will document it very precisely using ...
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1answer
164 views

Geoserver - how clear memory after tile-seeding and normal wmts queries

I am currently doing a lot of seeding of tiles in GeoServer and I noticed that after the tiling process is over the memory that is required during the task is not cleared. The same thing happens after ...
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1answer
49 views

Watershed issue

I am attempting to create a catchment of Danube. So far I have used the r.fill.dir to create a depressionless map and flow directions. Thus, I am now looking to use r.watershed to create stream ...
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1answer
110 views

Topology error in ArcGis

I am trying to intersect a large feature class (118692 elements) with a grid (58000 elements) but I get an error message. Traceback (most recent call last): File "Path/InterJoin.py", line 24, in &...
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1answer
477 views

How to increase Java heap size on GeoServer on Windows?

I tried setting wrapper.java.maxmemory=1300 parameter in c:\Program Files (x86)\GeoServer 2.11.1\wrapper\wrapper.conf but I can't set more than 1300MB (geoserver service can't start). I tried ...
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1answer
407 views

QGIS: How to create a permanent vector layer

I am currently creating an vector layer like following: outLayer = QgsVectorLayer('Linestring?crs='+ crs, 'graph_with_azimuth_ogr' , 'memory') The outLayer is now stored in memory, which means it ...
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130 views

Mapshaper running out of memory on R

I'm using rmapshaper, the R wrapper of MapShaper, to simplify polygons without slivers and it works well on small shapefiles. However, when I run it on a larger one (~150M, ~5000 shapes), it runs out ...
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2answers
414 views

Memory leak in ArcGIS Pro: in_memory workspace is not deleted

I have a python script for ArcGIS Pro 2.0.1 that executes the same code with the same data size in a loop. So intuitively the run times of the iterations of the loop shall be about the same. However, ...
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0answers
118 views

GeoJSON files using too much memory?

I have about/more than 400 GeoJSON layer files in my QGIS project. When I checked the task manager memory, it displays qgis.bin.exe *32 using about 1,334,000 of CPU memory. I had another version ...
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1answer
1k views

Insufficient memory for QGIS Raster Calculator?

I read related posts, but could not find an answer. I'm trying to perform an operation on two "light" rasters (80mg and 15mg), but get this error over and over. Any suggestion? This operation worked ...
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2answers
585 views

Error in raster Analysis in QGIS

I'm trying to conduct raster analysis in QGIS on a digital elevation model with a grid resolution of 5 cm. The disk size for the data set is 151 MB. When using default GDAL raster calculator it throws ...
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1answer
266 views

Duplicating memory layers in QGIS

I kept my original question clear and concise to make it easier to answer. This is a response to requests for more information. Introduction I am using QGIS version 2.18.9. I created about 20 new ...
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1answer
293 views

Raster Read Write Memory Issue in R

I am reading some EVI values from 46 raster layers (250 m resolution) 231 rows, 481 columns each and applying Support Vector MEachine (SVM) to classify using the training data stored in excel file and ...
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3answers
285 views

NetCDF to Raster: Dealing with Memory Leak

I have a short script that I am using to process roughly 5,000 NetCDF files so that I can extract a single raster layer. This is not difficult, and I have a short script that does it as follows: ...
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1answer
210 views

Measure Performance per layer in QGIS

I'm working in a relatively large project in QGIS 2.14, mostly loaded with .shp files. The issue is that lately got painfully slow when zooming or changing map view. I've tried to delete the largest ...
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1answer
164 views

Duplicate any active layer in memory using pyqgis?

I have seen Duplicating layer in memory using pyqgis? and I would like to do the same but for any active layer in the TOC whether it is a Polygon, Linestring or Point layer. Is it possible? This is ...
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1answer
1k views

How to remove memory layer from memory?

I have a plugin that creates a memory layer and displays it on the canvas. If I run the plugin a second time after removing the memory layer from the layer list panel without closing QGIS the memory ...
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1answer
50 views

ArcMap Renderer Memory Usage

I have two MXD files, both of them have one feature layer with unique value renderer and multiple values. Symbols are completely different but all of them are approximately 500 x 500 and 72 DPI. when ...
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1answer
66 views

Why when dump a layer to memory, initial record is 1, if in original layer was 0?

I load a layer from a Shapefile (featuresA) and duplicate its contents into a memory layer (featuresB). featuresA[0].id() is 0, but when copy his content to memory over featureB is 1, ...
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1answer
2k views

Saving vector memory layer to file using PyQGIS gives empty file?

I am learning to write standalone scripts with Pyqgis. I am trying to read a file with a big shapefile of polylines (64MB), create a memory layer, copy the features to, and save into another file ...
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1answer
211 views

ogr2og2 fails with memory allocation error post v2.0 for MSSQLSpatial

There are a few of us encountering "Memory allocation" errors when using ogr2ogr to import spatial (shp/gpx) data into a MSSQLSpatial databse. According to this post: Writing shapefile to SQL Server ...
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1answer
299 views

Memory leak while using in_memory ArcGIS 10.1

I am running a Python script to make point feature layer from a series of netCDF files and then perform a spatial join with a number of polygons and save the results as a table. I am using arcpy....
2
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1answer
336 views

Viewshed analysis plugin MemoryError in QGIS

I am very new to using GIS, and I am trying to do a viewshed analysis in QGIS 2.16.1. I have tried two different methods, one using the plugin for Viewshed analysis and the other using the GRASS (r....
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0answers
266 views

ArcGIS PRO Memory Leak Caused By Single Feature Class [closed]

I use a combination of ArcMap and PRO on a daily basis. It doesn't appear that many people are using PRO yet based on the lack of documentation online. All of layers are feature classes stored in ...
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2answers
2k views

Duplicating layer in memory using pyqgis?

I have a layer in QGIS, and I want to duplicate it through a plugin so I can use the copy of it as I want, without modifying the original. Of course layer2 = layer1 will not work, because everything ...
2
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0answers
435 views

Python/Arcpy Crashing [closed]

I am running a fairly large script where I export to a PDF. Now I added an export to Excel along with export to PDF from the same MXD. The Python window says python.exe has stopped working, ends then ...
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1answer
521 views

How to reuse memory pointer of GDAL Memory driver

I am doing the same as in [GDAL API]: can't save image in some formats That is, saving a JPEG image with GDAL. I know I'd have to create a MEM buffer and then CreateCopy to JPEG. However, I'd ...
4
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2answers
3k views

Will upgrading my RAM and Processor speed up functions on QGIS Desktop 2.12.0?

I am using QGIS 2.12.0- Lyon (64-bit) at work and have been finding with especially large amounts of data (many vector layers) that all processes on the system have been running slower. I am running ...
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1answer
4k views

Increasing/allocating RAM for ArcGIS usage?

In my x64 laptop I have 16G of RAM. I see arcGIS is using 4G, I have 11G of RAM available. Also, I was trying to process an 8G raster and I've got a not enough memory error. Is there anyway I can ...
2
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2answers
1k views

Out of memory when running ModelBuilder?

I'm currently using ArcGIS 10.3.1 on a 64 bit windows 7 machine. When I run the following model, every iteration adds about 20 consistent megabytes into the ArcMap sessions memory until it eventually ...
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0answers
195 views

Arcpy Select by Location out of memory

I have multiple lines (lines) intersecting points (centroids) from which I want to extract landuse values and then write the extracted values to the lines as 'land1' and 'land2' values. I need to ...
2
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0answers
82 views

Select by location not selecting all features in ArcPy [duplicate]

I am having an issue with the "select layer by location" tool in my ArcPy script, that may be due to a hidden memory error. Using one feature class with 281 polygons, I would like to select all of the ...
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1answer
808 views

How to speed up QGIS project opening with large point datasets?

I recently loaded a big point set (in terms of memory usage) in the QGIS project i'm working on. This layer is necessary for the project but it is not used often. Most of the time is turned off. The ...
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0answers
100 views

Access MEM data from GDAL?

I don't have any answers (yet) from from previous question on GDAL memory raster + OpenLayers, so i'll try to ask an easier question :) Anyone knows how to access GDAL memory with command lines when ...
2
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2answers
1k views

Memory limit in ArcGIS Pro? [closed]

What I'd like to know, more than the theoretical limit of the new ArcGIS Pro memory usage, is the real limit. So, for users of ArcGIS pro, have you run a process using more than 4 GB of RAM, if so, ...
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1answer
156 views

Arcpy scripts freeze on reaching a certain level on big datasets

I have a geodatabase with 300 featureclasses with around 4.5 million features in each featureclass. I am updating each featureclass with a value calculated through an algorithm. The IDLE ide for ...
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0answers
81 views

QTiles Plugin maximum store support, intensive computing time?

We try to compute 187 000 tiles with QGIS plugin QTiles in zoom level 18 (around 3000 square kilometres). There are 25 layers in there (mainly polylines and polygones). It took much longer than usual ...
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1answer
701 views

postgresql out of memory [closed]

I clip 70 raster with polygon in postgresql, the result are: out of memory, Fatal on request size of 10872 I read some solution about changing the postgresql.conf parameter but nothing work for me ...
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1answer
132 views

Optimize my code or get out this process without charge as much RAM?

I'm working with script code in python for some processes from raster layers, my code takes the raster files, create arrays of data, manipulate the data and then creates a rater output with the ...
1
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1answer
438 views

GRASS 7.0 fill.dir crash

I am working on a 13407 lines * 11050 columns raster file (SRTM DEM, 30m) with a script that calls a series of hydrological modules in GRASS 7.0. The system I am using is a Windows server 2012 R2, 64 ...