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Geographic Information Systems

Questions tagged [stack]

stack in this context is intended for questions relating to the stacking of rasters, it is not intended for questions relating to a GIS software stack

61 questions
info newest frequent votes active unanswered
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1answer
26 views

Using raster stack function time in R?

I successfully ran a function over a smaller test raster stack (48 layers) in about 30 minutes but cannot run it over my large stack (1462 layers). The last one I tried over the large stack ran from ...
0
votes
1answer
11 views

Plot a series of subsetted pixels from a raster stack in R

I have created two raster stacks and would like to plot a row or column of pixels through the stack, but am not sure how to approach this. I know I can subset by layer, but how do I subset ...
0
votes
2answers
32 views

Why does the Extent of NIR Band 8 Landsat image not match other bands, even when cropping to a specified extent?

I'm trying to load and then stack four bands 2,3,4 and 8 RGB and NIR from Landsat images. I have downloaded and extracted them and they are in .tif format. # loading the bands B2 <- raster("./...
0
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0answers
33 views

Plot raster Stack in R using the plot() command and overlay polygon shapefile

I have a raster stack with 4 raster layers which I want to plot in R using the simple plot() command (not levelplot or spplot). Also, I want to plot on top of every layer a polygon shapefile of the ...
0
votes
2answers
19 views

Raster operations in a raster list in R

I have a raster list (21 in total) S1 that have the same projection, resolution but not exactly the same extent. Due to this difference, I cannot stack them without solving the extent/dimensions ...
0
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0answers
65 views

Error in compareRaster(rasters) : different extent

I'm preparing independent raster for LR model: the resampled rasters files: Aspect=raster("resampleData/Aspect_re.tif") Curvature=raster("resampleData/Curvature_re.tif") Elevation=raster("...
0
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0answers
15 views

Processing stacked layer in TIMESAT?

I'm trying to conduct a time series analysis for 10 years period using MODIS13Q1 16-day product. I have stacked the layers of about 420 interpetrating images in one raster file but can't find a way to ...
0
votes
1answer
244 views

Import multi-band TIFF in R

I am trying to import a TIFF file that contains 2 bands. When using the following code in R, it seems only the first band is being recognised. S1<-"my/path/" S1<-list.files(S1, full.names = ...
0
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0answers
47 views

Convert raster list to raster stack in Python

I have a folder (with subfolders) containing different raster files (Sentinel-2 images). I want to import all the bands to python and creater a raster stack to allow further processing (...
0
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0answers
41 views

What is the difference between a raster moasic and a raster stack?

I'm trying to figure out the most useful way to store and process some MODIS Vegetation Index data (MOD13Q1). Currently, I have many .hdf files that cover the same spatial area over 18 years. I plan ...
1
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0answers
33 views

How to save statistical parameters of a raster stack in a csv using R

I have a reference raster and a stack of other rasters. I wanted to perform Mean, Std Dev and Bias of the reference with respect to the remaining. So I calculated the Cell Stats of all but when I try ...
3
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0answers
87 views

Stacking and masking Landsat at the same time with rasterio

Based on answers from previous questions 1,2 and the Masking a raster using a shapefile guide from rasterio cookbook, I wrote the code below. The code runs correctly. I would like to improve it. 1- ...
0
votes
1answer
215 views

Add bands' name and description to the Metadata when stacking using rasterio

I'm using this code, of @Loïc Dutrieux, to stack 8 Landsat bands. with rasterio.open(final_list[0]) as src0: meta = src0.meta with rasterio.open('stack.tif', 'w', **meta) as dst: for id, layer ...
0
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0answers
62 views

Stack multiple Landsat images

I would like to stack around 700 Landsat images in specific format as input to YATSM Continuous change detection and classification (CCDC) algorithm. I try to use this bash script 4_stack_TIFF.sh. In ...
0
votes
2answers
66 views

Selecting layers of a raster stack using a sliding windows as a step in R in for loop

I would like to create a loop that every time selects the first ten layers of a raster stack, calculates their mean and saves it to a layer of a new raster stack. Also, I would like to have a step ...
0
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0answers
67 views

Stacking MODIS NDVI raster data MOD13Q1 in ArcGIS Desktop?

I am new in working with ArcGIS for MODIS NDVI data. I have 230 TIFF images of MODIS NDVI MOD13Q1. I need to scale these images together, because the number of images is quite high, so how can I scale ...
0
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0answers
171 views

Google Earth Engine: Stack an ImageCollection

Does anyone know how can I stack all this collection? I made my own collection from January Landsat images (L7 and L5) and I would like to stack all the images to check which are the areas with more ...
3
votes
1answer
789 views

Raster calculation loop - R

I have a raster stack of 108 elements The stack 'images' is created using 4 bands (RGB+NIR) of 27 satellite images. The sequence of the rasters in the stack is: Position [[1]]: blue band image 1 ...
4
votes
1answer
2k views

How to stack bands in Google Earth Engine?

I have created an Image collection in GEE and with the help of a function I have computed NDVI index and mapped it to create another collection with NDVI as a band. Now I want the create a stacked ...
2
votes
3answers
2k views

Stack rasters with different origin, dimensions and resolution in R

I have three raster files with the same extent and CRS, but with different origin, dimensions and resolution. r1 class : RasterLayer dimensions : 3020, 3043, 9189860 (nrow, ncol, ncell) ...
4
votes
1answer
332 views

How to create raster stack from names on R

I have a dataframe containing the best predictors by their contribution to a model: bestpredictors var contrib 2 Pfallwinter 8.1141 15 Tofall 58.0000 23 ai 5.3573 26 ...
1
vote
0answers
187 views

Is it possible to list SpatialGridDataFrame files to be used in a loop?

I have a lot (>50) of SpatialGridDataFrame files that I need to turn into raster files, stack with a set of raster files I already have and then extract data from random points from each layer of all ...
4
votes
2answers
2k views

Mean by month on R stacked raster

I work with MODIS NDVI rasters in 2016. I have 23 rasters stacked in one object. I have 2 raster by month. I would like the average by months and conserve a raster for each month. ndvi.stack <- ...
1
vote
1answer
827 views

R Stack. Extent and CRS

I'm new on R. I was listing .tif files from a folder to R. My final product is going to be a value mean of all the files in only one image. So I start stacking all of them, then brick the stack, and ...
1
vote
0answers
65 views

Stacking/Aligning High-Res UAV Mosaics from Different Dates in QGIS?

I have two mosaics taken in different band sets respectively, on two different flights- of a crop field. The flights were taken a day apart, so the vegetation cover has not changed. The only issue is ...
2
votes
2answers
3k views

Handling multiple-extent-problem to create raster stack in R?

I am storing ~ 30 raster files in a folder and want to create a raster stack. I know that not all of these rasters have completely the same extent. They do have the same resolution and CRS. Thus I ...
4
votes
1answer
735 views

R package gapfill: How to convert R raster stack to 4-dimensional array and then back to raster stack?

I'm currently analyzing MODIS EVI time series (MOD13Q1) for a small region between 2000 and 2015. Now, I would like to fill missing values using the new R package gapfill. What I have done so far: ...
0
votes
1answer
80 views

Matching extent (samples & lines) to get multi-temporal stack

I downloaded several Landsat scenes (4x3) to create some multi-temporal stacks to see the phenological difference in April/March - mid summer - autumn. I actually use The EnMap Box which has been ...
1
vote
0answers
101 views

Determining Highest Position in QGIS for raster stacks with 10+ images?

I want to follow up on this question from last year Emulating ArcGIS Highest Position tool in QGIS? Here the question is if QGIS has a tool like the "highest position" tool in ArcGIS, where, in a ...
0
votes
1answer
212 views

raster sytling multiband rendering 0=nodata

Is there any way to set the pixel value 0 to nodata of a raster stack in the multiband rendering type in QGIS? I remember that it is possible to check a box in arcgis for that, so maybe i just ...
0
votes
1answer
54 views

Receiving higher values than should be possible in stackApply SUM for Frequency calculation in R

I am currently working on creating a frequency raster for a country based on multiple Rasters of the same day through following years and where the previous values are reclassified to 1's and 0's. The ...
3
votes
2answers
2k views

How to remove the Na values from a stack of rasters?

In R I have a stack (nsw.stack) which contains 6 variables. I have clipped the extent. However, When I look at the summary it appears that there is a lot of NA values (see below). I think this is ...
1
vote
2answers
131 views

How to convert a raster output in a stack in R into ArcGIS

I am modelling the response of a bird (skylark) to various climatic and topographical variables in the program R. Using the predict function I predicted the abundance per pixel (see below for code). I ...
0
votes
1answer
49 views

filter a raster stack in Arcgis

i'm trying to run "Filter" operation using AcGIS on a stack layer of 331 bands. However, the result is always a raster of only one band. How can i get operation to be done on the whole stack?
1
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0answers
189 views

Raster package limitations

I am very new to R and to raster package and I was hoping that someone could provide some guidance. I am trying to run a function that averages a series of rasters, 300 to be exact, they are in geotif ...
2
votes
0answers
117 views

Layer Stack 6 Landsat8 bands

I have 6 images from Landsat 8 (Green,Red,NIR,SWIR1,SWIR2,NDVI). When I want to layerstack them with "Merge" I always get a result tif which is just black and white, however I can see that all 6 bands ...
1
vote
1answer
135 views

Matching Decedal Average NDVI and Worldclim Data

Ive never used NDVI (or EVI) datasets in R. Does anyone have any resource I could use to access a decadal average NDVI dataset for the globe. It would be preferable if this dataset was also comparable ...
3
votes
2answers
2k views

Extract raster layer data by attributes in RasterStacks R

I have a RasterStack with 2 raster layers of the same area, one from a SpatialPolygonsDataFrame (layer1) and another NDVI satellite image (NDVI). layer1 has a series of polygons, each with various ...
8
votes
1answer
302 views

Stacking Vector Layers in TileStache

I am serving several vector tile layers of different geometries (point, line & polygon) in TileStache using VecTiles:Provider, with this cfgfile: { "cache": { "name": "DISK", "path":"...
2
votes
1answer
65 views

How to determine the appropriate size of a 3 dimesional raster block/chunk

I am processing large MODIS time series (12 years) dataset with an array dimension of 4800 x 4800 with a data type of Int16-Sixteen bit signed integer. I want to build a 3 dimensional array (row,col,...
3
votes
1answer
2k views

R: extract values from raster stack and aggregate results

I'd like to extract values from a rasterstack, cell by cell, and create a list of the values: ext <- extent(0,100,0,100) r1 <- raster(nrows=100, ncols=100,ext) r1[] <- sample(seq(from = 1, ...
1
vote
1answer
3k views

stack rasters with different extent and resolution in a loop with R package raster

I would like to stack rasters with the R package "raster". Layers are in ascii format. I want to crop them to have the same extent and project them to have the same resolution. My code gives raster ...
1
vote
1answer
135 views

stack 10 modis ndvi geotiffs and scale them by 0.0001

I have 10 geotiffs Modis ndvi named 2005.tif ... 2014.tif I want to stack them all and create timeseries. i know how to do that, but the stacked images still need scaling by 0.0001. how can i bulk ...
4
votes
1answer
300 views

Where are the “band names” of an ENVI file once it is imported in R?

I have a .dat file (ENVI format) with specific band names, as you can see in the snapshot. I've imported this file in R, but I cannot find the band names in the R object. The command names(...
3
votes
3answers
814 views

Unstack band layers from raster

I have stacked layer (from ERDAS) of Landsat 1-5 and 7, bands. I want each of the bands in a separate layer. How can I do that?
2
votes
0answers
325 views

R raster stack 4 dimensions

I am trying to create a raster stack / brick from a list of ncdf files with the dimensions 160x160x24x1). r = stack(files) This gives me a raster stack but without the 4th dimensions which is ...
1
vote
0answers
310 views

gdal_merge shifts rasters after processing, layer stack is slightly off

I have experienced that gdal shifts rasters. The outputs of gdal_warp are often skewed, have different pixel sizes and so forth. A known error which has also been discussed here. But now, I had to ...
0
votes
0answers
114 views

Calculating maximum mean temperature of the coldest month with a lists of rasters

I need calculate the maximum mean temperature of the coldest month. I need first select the coldest month in a list and then in this month determine the maximum temperature. I do this: Create the ...
2
votes
1answer
535 views

Calculating quantile values over a stack of images with grass gis. Help needed on r.series

I need to calculate the values for the 25%, 50%, 75% and 90% quantile over a series of rasters (time series of ndvi values from landsat). I am exploring the r.series command in Grass GIS, but the ...
3
votes
0answers
455 views

How to calculate 90% confidence interval in a raster stack

I have a stack of grid files (23) in ASC format from a MODIS sensor and I need to calculate a 90% confidence interval, mean, min, etc, for each one in R, how can I do that? specially the interval. #...

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