Questions tagged [image]

A representation or description of a scene, typically produced by an optical or electronic device, such as a camera or a scanning radiometer.

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Aligning features of two raster images without "skewing" either using QGIS

What is the best way to simply move one raster image, without skewing it, to align with another? Does this require georeferencing? I don't want to "tweak" either image. Just to move / shift ...
Craig's user avatar
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3 votes
1 answer
69 views

Setting image as font filling in QGIS

Is it possible to use an image as a label font filling to have a result like in the following examples with national flags?
SirB1's user avatar
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Marker icon images not displaying in Leaflet.StyleEditor

While using Leaftlet.StyleEditor plugin, I cannot change the marker icon as the available icon images are not displayed. I tried the Demo(https://dwilhelm89.github.io/Leaflet.StyleEditor/) from the ...
user3072602's user avatar
1 vote
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Sentinel 3 data changes in Google Earth Engine platform since 2021

For calculating Cl-a in lake waters, I'm using three bands of Sentinel-3; one of them is band 10 (Oa10_radiance). Since 2021, the values of this band and band #1 contain nonsense, very low negative ...
Oleksandr's user avatar
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Reprojected image is rotated, can't match it with DEM

Why would reprojected sat image be rotated? I can't match it with source DEM map, if there is rotation. gdalwarp -t_srs EPSG:31287 input_satmap.tif output_reprojected.tif I use that line in gdal. ...
Alex J.'s user avatar
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Replacing raster values by list GEE

I have a raster that I have mapped his values. I have made a new list of values that I want to replace them. But I want the replacement to be by pixel to pixel. Example: original raster pixels value = ...
Jony's user avatar
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1 vote
0 answers
24 views

Improve image quality of "Decoration"

I imported a key using Decorations -> Image in QGIS 3.32 and the quality is poor, especially if the image is made smaller. I do not mean that the actual image file is small, but that displaying the ...
Nadka's user avatar
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3 votes
1 answer
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Image Resolution degrading when georeferencing

I have a scan of a historical map in pdf. I converted it in to png as well as tif and then georeferenced it. However, as soon as I load the image (both png and tif) in to the georeferencing tool the ...
Lina's user avatar
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Add Image next to Mouse Cursor with ArcMap Add-in Button

I am working on an add-in program for ArcMap 10.5. Here is the goal: When the user clicks the add-in button, an image displays in the winform picture box. (For this example, that image comes from ...
lep's user avatar
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1 vote
1 answer
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Band calculations using satellite images captured on different dates

I want to do some band calculations using bands taken from multi spectral (MS) satellite images and bands from a short-wave infrared (SWIR) image. I have one SWIR image covering the whole area of ...
rsf69's user avatar
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1 vote
1 answer
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QGIS map composer remove red cross with condition

In the atlas composer, I'd like to be able to assess whether the path to the image is valid. Something like, but I always have the "photo" attribute (an ID) filled in. I will check the path. ...
pasqal's user avatar
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ArcGIS Pro map series exporting to JPEG or PNG using arcpy script tool has same extent for every exported image

I've written an arcpy script tool to automate exporting a map series to a set of image files (one image file for each page of the map series). Each image has the correct features displayed, for those ...
Son of a Beach's user avatar
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1 answer
89 views

In GEE replace NoData value with value Zero in an image with only one band

I have the following code in GEE: I am trying to replace the NoData values with Zeros. var mag_nbr = float_predictor_variables.select(['MAG_NBR']) var mag_nbrZero = mag_nbr.where({ test: ...
Isa's user avatar
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Does Landsat satellite image should have raster value to -1 and 1?

I am calculating the NDVI for Landsat-8 using the formula as shown below:- But the pixel value rendered is as shown below: - But the NDVI values need to be between -1 and +1 however, the value ...
Pushkar's user avatar
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1 answer
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How to display in QGIS Map Tips an image with absolute path written in the layer? [duplicate]

I am trying to display the images of a layer with the "map tip" function. The absolute path of each picture (D:\ ... \ ...\...jpg) is written in a field called "path". I tried to ...
AbeteBianco's user avatar
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QGIS: Export ShapeFile-Layer with image coordinates

I am completely new to QGIS and I am trying to solve this issue: I have 3 layers: OpenStreetMap, an image and my shapefile layer with polygons. All polygons are within the image. Is it somehow ...
Life4Gaming's user avatar
1 vote
1 answer
38 views

Working with 8-bit image in Earth Engine

I'm working with the MODIS Terra Continuous Fields 250m product. The data include several bands, including a "Quality" band. var geometry = ee.FeatureCollection("FAO/GAUL/2015/level0&...
user157564's user avatar
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1 answer
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How can I use code to get accurate "crs_transform" of ee.Images after the clip() operation?

I use GEE(Google Earth Engine) for my research. I found that the parameters "crs_transform" of the ee.Image did not change before and after the clip() operation. print(ee.Image('LANDSAT/LC08/...
he lirong's user avatar
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1 answer
124 views

QGIS python for generating TIFF images from LAT/LON

I am new to PyQGIS, looking for help with the following. I included some pseudo-code at the bottom. Read a CSV file with records having these fields: Longitude1, Latitude1, Longitude2, Latitude2, ...
gregrae's user avatar
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79 views

Round numbers of Image Collection in Google Earth Engine

I have an image collection filtered data How can I compute sum reducer with two decimal places of my total image. var imagess = chirps .filter(ee.Filter.date('2022-02-01', '2022-02-10')); print(...
Adi's user avatar
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135 views

Exporting Images using PyQGIS

I am attempting to export an image based on a portion of the map. I have written code that successfully identifies the area of the map I would like to output, but I am having trouble exporting ...
JGiacchi's user avatar
1 vote
2 answers
255 views

How to mask bands of an image based on values of one of the bands using numpy and gdal

I have a raster with two bands, and I want to mask both bands to get data where band "yod" has a value of 2011 and export a new tif file with the same two bands masked. The following script ...
Isa's user avatar
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33 views

Put a boundary line on the image that is already clipped to shapefile, the boundary of the same shapefile in Python

I managed to clip the image to the shapefile, but when I plot I see that it is following the pattern of the shapefile, but I want the boundary to appear on the final image too. Here is the code fig, ...
Tshepho Manyothwane's user avatar
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1 answer
199 views

For loop over Feature Collection to return Image Collection in EE python API

I am new to the EE python API and am struggling to get a for loop (could eventually also use a map function) over a feature collection. My idea is to have one image and a FeatureCollection as input, ...
Felipe Coelho's user avatar
1 vote
1 answer
112 views

Image Composition using average values and if-else

I am new to Google Earth Engine and have been using it for just over two weeks now. I have a question about image composition. I have got three images with me that cover the same area over three ...
Raj Bajaj's user avatar
1 vote
2 answers
123 views

Distorted image overlay in Leafet and Mapbox

I have created some png images from a tiff using gdal_translate It fits well in QGIS Info from QGIS about the layer Extent -63.0499992370605469,-11.0499992370605469 : 101.9500007629394531,71....
user1249791's user avatar
1 vote
0 answers
118 views

Save Google image as map with a point location dropped on it using a coordinate

I have saved a Google map image (PNG) using coordinates in Python. Now, I want to mark a location(as a coloured dot) of that coordinate on the map and save the same image. Are there any options ...
qeg's user avatar
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2 votes
0 answers
138 views

QGIS Interactive PDF Map - Pop Up Images

I am a new user and still learning. I created a map that when the user selects specific points on it, a pop-up image displays. Is it possible to export this map as an interactive pdf and keep the pop-...
Lincoln's user avatar
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219 views

Internal error when exporting image data from Google Earth Engine to Google Drive

I’m running a script on Google Earth Engine to download a couple years of data from an image collection for a region in the US, but the download keeps failing. The console gives the message “Tile ...
Lotem Taylor's user avatar
1 vote
1 answer
163 views

Using Python (in Colab), how to convert a multiband ee.Image into an ee.ImageCollection?

I ultimately want to convert an ee.Image to an xarray object so I can further process the data. I know the library wxee can do that with ee.ImageCollection.wx.to_xarray(). However, it requires an ee....
Camila's user avatar
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0 votes
1 answer
137 views

How to getValue (string) from an ui.Checkbox in GEE

I am developing an GEE-app where I initially want to concatenate a birdSelector string for user-defined filtering of an image collection containing monthly bird distribution maps from different ...
Frank Hanssen's user avatar
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0 answers
69 views

Why Aster Image not showing (swir_4,5,6,7,9) bands in the area of interest in Google Earth Engine?

When I want to download all bands of aster images, in Google Earth Engine, for AOI some bands not showing the phenomenon, and only the image has a black background, this problem occurs in the swir ...
user221502's user avatar
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0 answers
33 views

Looping through points in an image to find date range with highest cumulative rainfall

New to GEE and confused about difficulty of iterating through items. I want to find the planting season, which is very location specific, and I define it as the 90 day period at a given location with ...
violet's user avatar
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1 vote
0 answers
414 views

Shapefile to img conversion tool

I've been looking for a tool to convert shapefiles to img files (for eventual use in a Garmin GPS device). Any idea of how to perform such conversion or of any tools that can do that? I'm using QGIS.
Benoit's user avatar
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87 views

Download clipped Sentinel1-GRD data using bounding box or an AOI

I am using this code to download Sentinel-1 data. I am able to download a whole tile. I want to crop a specfic area and download that region using my AOI. This is my code of Jupyter notebook- pip ...
sensing's user avatar
0 votes
1 answer
208 views

GEE error: Image (Error) Image.reduceRegion: Provide 'geometry' parameter when aggregating over an unbounded image

I want to perform PCA on GEE using Sentinel 2 images of two different time period. Everything runs fine but i keep getting error Image (Error) Image.reduceRegion: Provide 'geometry' parameter when ...
qeg's user avatar
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0 votes
0 answers
55 views

How to fill gap in GEE (JavaScript)

I am trying to creat LST maps for given dates. But the images have gap (stripes) for months Jan to Apr in 2011 and 2016. The following is the link of my code in GEE (JavaScript): https://code....
Sam's user avatar
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0 answers
87 views

Apply image.sampleRegions obtaining geometry of pixels instead of points in Google Earth Engine java-script API

Goal In Google Earth Engine, I would like to turn a multiband image of 10x10km resolution into a feature collection, where every pixel becomes a feature (i.e., a rectangle) with the pixel values of ...
Thierry's user avatar
  • 119
0 votes
1 answer
303 views

How do I export an image collection in GEE?

I am a new student and have been trying to export images from GEE. The following code generates Mean Surface Soil Moisture for each month in Afghanistan over the course of 6 years. I export the data ...
Mas's user avatar
  • 33
3 votes
2 answers
156 views

Automatically export each item in a layer as an image

I have a simple CSV file with points only. Each point represents a historical location where certain last name was mentioned in the XIX century. It looks like this: lat;lon;last_name 55.9885461;66....
merchant's user avatar
1 vote
1 answer
57 views

QGIS print layout: no options for string for path to raster image

I want to create a print layout/atlas in QGIS where an image captured by QField is displayed automatically. But now when I want to select the file path in the area Image -> Raster Image->Field ...
Josh's user avatar
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0 votes
0 answers
68 views

Offline image export in Google Earth Engine

Can an image be exported when I am not online in Google Earth Engine?
Qing's user avatar
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1 vote
1 answer
100 views

Plot shapefile as squares [closed]

I am trying to plot a US shapefile as squares instead of showing the actual boundaries. I can plot a shapefile like this... import geopandas as gpd import numpy as np State_Shp = '.../...
Atreya Dey's user avatar
2 votes
1 answer
198 views

Can't display a satellite TIFF image in Spyder using Python

I wish to create a Python script that opens a multiband satellite tiff image, then selects the bands the RGB image will be displayed with and then from this point and then I can collect my data from ...
Giannis Psixogios's user avatar
5 votes
2 answers
157 views

View more than three pictures in the image viewer of QGIS

I'm adding photos inside point fields in a GeoPackage table in QGIS. The default image viewer cannot show more than three photos and the window is not scrollable. Is there any settings so that I can ...
ujjwal basnet's user avatar
1 vote
1 answer
241 views

Export image: Error: Internal error. (Error code: 13), I used my code many times and suddendly it stoped working

I want to export Sentinal 1 images to my drive. My shapefiles are in ESPG:4326, the images are in different systems, and I want to project the images to ESPG:3995 while exporting. The code was working ...
marz's user avatar
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0 votes
1 answer
475 views

Saving plot from .nc file without showing the plot

I am trying to save the sequence of plots of 24 hours of ERA5 data from .nc file without plotting them. I am using xarray for reading .nc data. Here is my code: import xarray as xr import matplotlib....
pwnkit's user avatar
  • 17
2 votes
1 answer
240 views

OL Static Image with dynamic extent

I use the Static Image function to display static images as a overlay in a map. The images are loaded by click OL feature points in the map. The problem is, the images have different width/height. ...
moriama's user avatar
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0 votes
0 answers
122 views

Lack of data from Sentinel 2 over part of the territory until 2019

When searching for Sentinel images, I couldn't find some of the images from 2017-2018. With what it can be connected? I've tried various methods, creating an image with both mosaic() and median(), but ...
Kirill's user avatar
  • 1
0 votes
1 answer
167 views

Select features covering an image (Google Earth Engine)

I have a feature collection (grids) and an image. Any ideas on how to filter only features that cover the image (only the unmasked part of the image which appears in the map layer)? Here's the code: ...
yoyo's user avatar
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