Questions tagged [saga]

SAGA (System for Automated Geoscientific Analyses) is a GIS toolbox with many modules that can be used from the GUI, command line or accessed through R,python or directly using C++.

Filter by
Sorted by
Tagged with
3
votes
2answers
2k views

SAGA installation in QGIS 2.8 on debian linux

I install QGIS 2.8 in debian (linux) through nightly jessie (qgis testing) and I see that SAGA is not in processing toolbox, so I install saga gis software but still it doesn't appear in processing. ...
7
votes
4answers
374 views

No SAGA available in QGIS Processing

I am running QGIS 3.4.14 on Ubuntu Linux 18.02. I cannot see the SAGA tool in the QGIS Processing window. I can confirm that I have SAGA 7.3 installed and working as a stand-alone GUI application. I ...
0
votes
0answers
25 views

package RSAGA : rsaga.geoprocessor error INPUT with R

I'm a french student, in advance I'm sorry for my english. I'm using RSAGA package to apply Gaussian Filter in my Canopy Height Model (CHM = DMS-DMS). I try this with RSAGA package, see below... ...
0
votes
0answers
14 views

Import satellite images in SAGA GIS [closed]

What do I do all the time when I import satellite images with TIFF format in SAGA GIS, it shows the error that (xml parsing error:’syntax error’ at line 1). What should I do to fix the error?
1
vote
0answers
251 views

SAGA GIS - raster image from Civil 3D

I am a new user of SAGA GIS software. I need to interface the Civil 3D 2015 and Hec Ras software in order to create a flooding map. In order to put in communication the two softwares, I have to use ...
0
votes
0answers
20 views

How to open HDF5 file on QGIS

I've acquired an extensive collection of HDF5 files of Net Ecosystem Exchange data with daily temporal resolution. It seems that QGIS cannot open the file type by just dragging and dropping (while ...
0
votes
0answers
21 views

Python fmask from command line or in Python script

I'd like to mask some clouds in Sentinel-2-Images with the python-fmask-library. As I'm not too experienced with Python and remote sensing, I have some questions. When I installed the library I ...
0
votes
0answers
17 views

Running raster mosaic in batch process in QGIS

I am wanting to mosaic multiple rasters within the same month into a single raster. I am trying to achieve this using the SAGA Mosaic Raster Layers tool within QGIS as part of a model (via the ...
3
votes
0answers
41 views

Proj4 string missing datum information for SAGA outputs loaded into R

I've produced a set of topographic derivatives using both SAGA and ArcGIS. They are all in the same CRS. When I load them into R, however, the proj4 strings are different: >arcRaster class ...
1
vote
0answers
13 views

How can I use QGIS's Saga watershed algorithm's “Borders” to extract from point cloud las?

How can I get the boundaries of the "Borders" returned by QGIS's SAGA watershed algorithm? So that I can extract/classify the areas inside borders from point cloud .lases?
1
vote
1answer
196 views

Moran’s I (spatial autocorrelation) in QGIS or SAGA?

Is there a way (plugin/processing tool) to calculate Moran’s I as a measure of spatial auto correlation of a point pattern in QGIS or SAGA?
1
vote
1answer
62 views

Qgis SAGA Upslope Area for several points automation

In the Upslope Area tool from SAGA it used to be possible to import the point file with multiple points and it would create several catchment/basins areas for those points. Now, it is only possible to ...
0
votes
0answers
24 views

Error while installing specific version of SAGA GIS on Ubuntu 18.04

I would like to install SAGA 6.4 on my ubuntu 18.04. Until now I ran the most recent 7.6, but due to some reasons I'd like to install 6.3. So I donwloaded the tarball, extracted it, ran ./configure ...
1
vote
1answer
134 views

Error creating DEM with Nearest Neighbour tool in QGIS?

I have an issue when I am creating a DEM with the tool natural neighbour on QGIS. When I extract my data directly on Qgis I have no issue creating a DEM. My points are coming from different sources ...
0
votes
0answers
29 views

SAGA Tools not working in QGIS 3.6.1 with GRASS 7.6.1

I installed QGIS 3.6.1 with GRASS 7.6.1 As I am trying to get administrative borders from old map. I did some pre-processing in GIMP and already selected the borders with treshhold functions and so on....
3
votes
1answer
439 views

Sentinel-1 SAR image is displayed upside down

I am looking at Sentinel-1 SAR image downloaded from ESA Copernicus - dhus location around south of Tokyo, Japan. File format is GeoTIFF. It looks good in QGIS. However, if I use SAGA, or SNAP, or ...
1
vote
0answers
24 views

Set QGIS 3.X additional dependencies in Manjaro

I am running QGIS 3.10 under Manjaro. I would like to add SAGA and R support to my QGIS tools as described in this thread (Configuring QGIS and SAGA on Ubuntu). The solution described here does not ...
0
votes
1answer
273 views

Unable to perform SAGA point snapping to line on Win and Mac

I have been trying to snap points from a shapefile to a line feature from another shapefile. However, each time I do this, I get the following error(s) (depending upon the OS used): (For OSX El ...
1
vote
0answers
17 views

Saga or RSAGA wind.shelter

I would like to run the Saga wind shelter index (wind.shelter). It was apparently on older versions of Saga and has been re-added to Saga 7.4 and 7.5 Here is what I have done: Installed Saga 7.3 ...
1
vote
0answers
47 views

QGIS 3.10.2 and SAGA on UBUNTU

When I run QGIS the log messages panel shows something like this: problem with SAGA installation: SAGA version non supported (found 7.4.0 required 3.2.). But in a ubuntu shell the command "saga_cmd" ...
0
votes
0answers
21 views

Mosaicing BIG Rasters based on data values

I have some rasters that contain spectral data, and some spatially identical rasters that have the nadir information from the acquisition for each pixel. I'm looking for a way to mosaic these together,...
1
vote
1answer
72 views

Adding two rasters in modeller

I'm trying to build a process model which uses a series of raster operations - Rasterize, Proximity, Raster Calculator. However, I couldn't seem to add two consecutive raster calculator processes. ...
-3
votes
1answer
83 views

RUSLE - LS - Factor - “Catchment Area”

Regarding to the SAGA GIS LS Factor module (http://www.saga-gis.org/saga_tool_doc/2.2.0/ta_hydrology_22.html), how should be executed the option with the "Desmet & Govers (1996)" method? Despite ...
42
votes
5answers
2k views

Generating equal sized polygons along line with PyQGIS?

I would like to create polygons along a line to use them for AtlasCreator in a next step. ArcMap has a tool called Strip Map Index Features. With this tool I can choose the height and width of my ...
4
votes
1answer
493 views

Writing SAGA_CMD command line formatting

I am trying to use SAGA_cmd to write a script that does the following: The united 1) Reads a series TIFF files I have in the work folder; 2) Runs a segmentation on the TIFF files on each respective ...
3
votes
2answers
2k views

Loading .hgt file in SAGA GIS

I want to display and work with the data from http://dds.cr.usgs.gov/srtm/version1/Eurasia/ in SAGA-GIS but am having difficulties knowing which module I should use to load the data. As far as I know ...
2
votes
1answer
57 views

Meaning of zero “0” value in raster layer produced by Soil Texture Classification tool in QGIS?

How to interpret zero "0" value in raster layer produced by Soil Texture Classification tool in QGIS? It cannot be found in classification table.
3
votes
1answer
443 views

SAGA hydrology toolbox Error: select a library

I am having trouble getting the SAGA hydrology toolbox running. Here when I try to fill sinks in the DEM a series of errors are flagged in the log file. This includes for 'select a library', 'DEM' and ...
2
votes
1answer
1k views

Layers not correctly generated using SAGA algorithms within QGIS 3.4.4-Madeira

I am trying to use a few algorithms that may be useful for my work, that are part of the processing tools packaged with the latest LTR 64-bit version of QGIS in Windows 10 64 bit.. However, all of the ...
1
vote
1answer
89 views

Exporting landcover clasiffication from ENVI to SAGA

I have basic knowledge in remote sensing and GIS. I have generated landcover map in ENVI 4.7. How can I transfer or Export/Import this into SAGA so that I perform other functions in SAGA. I want to ...
4
votes
1answer
716 views

Calls to SAGA routines in QGIS not working cross platform

The ability to write and run cross platform scripts for QGIS using python is OUTSTANDING! However, when I try to run the SAGA:MERGESHAPESLAYERS algorithm from a python script it works fine in windows ...
0
votes
0answers
38 views

Plotting the DEM into QGIS 3.10 from the CSV through SAGA

I had troubleshot with creating a DEM in QGIS SAGA, using this example: https://www.geodose.com/2018/09/how-to-create-dem-elevation-profile-qgis.html When I filled up the box as per below: I get an ...
1
vote
1answer
148 views

Re-projecting WGS84 to OSGB in SAGA GIS

I took some points with a GPS, and I'm trying to convert from GCS to OSGB 1936 British National Grid in SAGAGIS. I'm working with a shapefile. To reproject the vector layer to the OSGB projection I ...
1
vote
1answer
37 views

Unexpected error while RSAGA raster calculations

I want to use RSAGA package in R to calculate the topographical wetness index. However, while applying the rsaga.wetness.index() function, R gives me an error message (see below). My question is, ...
1
vote
1answer
57 views

SAGA difference tool in QGIS

I am using QGIS 3.4 Madeira. I want to use difference tool from SAGA from the processing tool box since my data has some invalid geometries and want to fix the issue later after using difference tool ...
2
votes
1answer
248 views

How to close open files after processing.runlag() command (Qgis: Error No 24)

I'm creating a pyqgis script. In this script I use the processing.runalg command several times. The problem is that these processes are within a for loop. After several iterations, the error number 24 ...
0
votes
0answers
32 views

SAGA error running “Raster values to points” (“shapes_grid” library)

I am using QGIS 3.10 and I want to generate a "fishnet" shape coincident with the pixels in a raster. I've done this before (in QGIS 3.4) using the "Raster values to points" SAGA tool ("shapes_grid" ...
0
votes
1answer
29 views

QGIS export DEM to SAGA grid - no coordinate system

I have created a DEM using survey points from a GNSS system. Works like a charm so far. I can extract elevation lines etc. However, when I export it as a SAGA grid it looses the coordinate system. I ...
0
votes
0answers
12 views

Outputting SAGA-classified grid into form that can be opened in ENVI with information of each classes

I'm new in SAGA and classification. I used the tool called "Local climate zone classification" in SAGA and I want to open it in ENVI to do the validation and stats analysis. What I output is a .tif ...
0
votes
1answer
37 views

Getting *.las file data into SAGA las processing tools?

How do I get .las files into SAGA las processing tools? Do I have to convert *.las data to *.sprm format first? If so, how?
2
votes
0answers
43 views

QGIS 3 Processing tools don't seem to work (can't load output)

I've got a new machine running on Win10 (I was previously on Win7) and I can no longer use... pretty much any algorithm, especially from SAGA. It's probably something to do with environment variables,...
7
votes
3answers
6k views

Configuring QGIS and SAGA on Ubuntu

During the past weeks, I have tried QGIS to recognize SAGA via the processing toolbox, both being installed from the ubuntugis-unstable repository. I have tried this on several virtual ubuntu ...
0
votes
0answers
39 views

Creating DEM from contour or point shapefiles in QGIS [duplicate]

I'm trying to make a DEM tiff file from elevation shapefiles that I have in QGIS. I have both contour shapefiles and XYZ-point shapefiles but I can't seem to make the DEM. I've tried using SAGA but ...
3
votes
1answer
708 views

Using SAGA Cluster Analysis for grids projection

I am having an issue with the SAGA cluster analysis for grids tool within QGIS 2.4. I am actually taking this as an online class through Del Mar and we are going over supervised and unsupervised ...
3
votes
1answer
1k views

Getting SAGA working with QGIS Sextante [closed]

I just created my account on this forum to find an answer to a stupid (?) problem I can't deal with. First, let's precise I just (some months ago) learned on my own what GIS was, and gave it a try ...
5
votes
6answers
4k views

Problem getting SAGA activated in Ubuntu QGIS 2.18.2

By some reason SAGA does not appear into Processing Toolbox list although I have checked it to be active. See screen capture. What could be the problem? QGIS vesion is 2.18.2 and OS is Ubuntu 16.04 (...
2
votes
1answer
56 views

Define Range when calling SAGA Kriging from QGIS

Is there a possibility to define the range-value or display the Variogram when you call the SAGA-Kriging-Module from QGIS? Maybe by using the python console?
2
votes
0answers
38 views

QGIS - SAGA Majority Filter creating huge output files

I am trying to perform a workflow that I have made in QGIS which operates on very large rasters (38244x62124). Leading up to this, I have been able to run various GDAL tools if I specify that the ...
0
votes
0answers
24 views

Topographic Wetness Index difference between SAGA and TauDEM

I calculated Topographic Wetness Index (TWI) using SAGA and TauDEM. Overall trend is similar but SAGA returned larger values compared with TauDEM. Sometimes the deviations are as large as 7 or 8. I am ...
2
votes
1answer
114 views

SAGA library is not visible in Processing Toolbox

The screenshot of Options > Processing I have SAGA plugin activated in my QGIS 3.8 on a Ubuntu 18 LTS machine. However, it does not show up in my Processing Toolbox. Could anyone help me solve ...

1
2 3 4 5
10