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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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Cannot display images on QGIS as action [closed]

I've been following through the QGIS training manual, section 5.4. I've created three features on the map, and have associated images with these features as attributes. I have set up an action in the ...
Asriel Wilde's user avatar
1 vote
1 answer
33 views

How to create an action to show an image from local files in QGIS 3.36.3 in Windows 11?

I've been trying to follow the tutorial laid out for QGIS 3.34. (https://docs.qgis.org/3.34/en/docs/training_manual/create_vector_data/actions.html#follow-along-creating-an-action), but apparently the ...
Snowfaerie's user avatar
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0 answers
5 views

How to filter out single properties from an Image on GEE?

I'm trying to filter out a single property from this Image on GEE but cannot figure out how to do so. I'm trying to extract "5: Coral/Algae" from "benthic_class_names" to create a ...
Nick Carrick's user avatar
1 vote
0 answers
40 views

Saving QgsSymbol as image with specific DPI using PyQGIS [closed]

I want to save QgsMarkerSymbol as a high dpi image (png) invoking the asImage method and then save its result (QImage) in a local directory. I tried using a custom QgsRenderContext object like in the ...
GallPeters's user avatar
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0 answers
11 views

Getting black parts of the exported image using Export.toDrive

I am trying to export images from an image collection, the exported image is black with no values appearing in arcgis pro Here is my code: polygon = ee.Geometry.Polygon([xMin, yMin, xMax, yMin, xMin, ...
Lara's user avatar
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0 answers
19 views

Error in display the image by cartopy

I want to visualize the image using cartopy. The image shows OK in the geemap. The coding as follow: import ee import geemap import cartopy.crs as ccrs import the cartoee functionality from geemap ...
Molly cao's user avatar
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0 answers
22 views

Image fails to dispalyed in QGIS Popup window

I can view the image path from attribute table but I can't view the image in popup. I can see the image using the identify feature option in toolbar. But I need to display the image in popup as a user ...
Hamsathvani Selvan's user avatar
2 votes
1 answer
110 views

Simple way to put a canvas on a map using Leaflet?

In Mapbox GL JS I might do something like: const canvas = document.createElement("canvas"); canvas.width = WIDTH; canvas.height = HEIGHT; map.addSource('canvas-source', { ...
John's user avatar
  • 141
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0 answers
32 views

Matching satellite, DEM and OSM images

I have a set of satellite GeoTIFF images (from https://xview2.org/) that I want to pair with DEM images from OpenTopography (https://portal.opentopography.org/raster?opentopoID=OTNED.012021.4269.3) ...
Kalia's user avatar
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0 answers
37 views

Use images as symbology for point features

I have a vector file that contains points having a name attribute that matches the name of traffic sign images I have stored locally. What I'm trying to do is to assign to each point its corresponding ...
aogino's user avatar
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0 answers
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QGIS 3D Map View : how to set image resolution on export

QGIS 3.36.1 on MacOS 13.6.6 From a 3D geopkg layer (LOD2) in a 3D map view I would like to export an image with higher resolution. Actually the exported image seems to have only 72 ppi. Is there a ...
relume's user avatar
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0 answers
53 views

GeoServer, CSS Styling, SVG parameters

I have a working SLD 1.1. on GeoServer 2.24.1 Part of SLD calls a parametric SVG image (green fill (#335b239) and red stroke(#ff0000)): <!--Parametric SVG--> <se:ExternalGraphic> <se:...
JA_LL's user avatar
  • 29
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0 answers
26 views

Create an array of band names where the pixel value is 1 in Google Earth Engine

I have an image in GEE with 20 bands, each corresponding to one year. Indeed, I have a time series. Each band can have values 1, 0, or -1. Value 1 means a specific event starts, and value -1 means the ...
Isa's user avatar
  • 193
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0 answers
66 views

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
74 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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0 answers
92 views

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
0 answers
37 views

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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0 answers
50 views

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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0 answers
35 views

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
  • 1
1 vote
0 answers
29 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
  • 51
3 votes
1 answer
107 views

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
  • 233
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0 answers
23 views

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
  • 117
1 vote
1 answer
83 views

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
  • 101
1 vote
1 answer
64 views

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
  • 538
0 votes
1 answer
327 views

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
0 votes
1 answer
236 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
  • 193
0 votes
1 answer
52 views

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
  • 83
-1 votes
1 answer
273 views

Displaying image with absolute path written in layer for QGIS Map Tips [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
0 votes
0 answers
67 views

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
41 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
0 votes
1 answer
166 views

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
0 votes
1 answer
140 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
0 votes
0 answers
98 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
  • 327
0 votes
0 answers
161 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
387 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
  • 193
0 votes
1 answer
304 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
145 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
195 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
133 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
  • 11
2 votes
0 answers
188 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
  • 21
1 vote
1 answer
219 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
  • 21
0 votes
1 answer
171 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
1 vote
0 answers
551 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
  • 11
0 votes
1 answer
275 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
  • 11
0 votes
1 answer
408 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
175 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
62 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
  • 11
0 votes
0 answers
69 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
  • 1
1 vote
1 answer
104 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
247 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

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