All Questions
874 questions
0
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1
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561
views
NDVI image value
In order to get monthly NDVI image with max value from two 16 day-images, I used mosaick tool in ERDAS8.7 by choosing max function from "set overlap function" tool. But after doing this, when I see ...
- 169
0
votes
0
answers
18
views
Converting Image to Gridded Feature Collection in Google Earth Engine
I'm working with Dynamic World data in GEE over a region of Bangladesh.
var roi= ee.FeatureCollection("users/salem043/Bangladesh/CB_with_added_upazila");
var lulc = ee.ImageCollection(&...
- 405
0
votes
0
answers
12
views
Add image layer to ecognition
Why, when I add an image layer to ecognition are the objects missing?
I have a ecognition project and I did multiresolution segmentation.
Now I want to add another image layer to project and clarify ...
- 1
0
votes
0
answers
8
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 ...
0
votes
0
answers
20
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, ...
- 1
0
votes
0
answers
35
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
...
0
votes
0
answers
26
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 ...
0
votes
0
answers
47
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) ...
- 1
0
votes
0
answers
44
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 ...
- 25
0
votes
0
answers
50
views
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 ...
- 71
0
votes
0
answers
42
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 ...
- 303
0
votes
0
answers
95
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 ...
- 1
0
votes
0
answers
46
views
What data does clustering use from multiple raster files?
I currently have a series of rasters of the same area across different times. The data is categorical: the product of a supervised classification used on LANDSAT data run on ERDAS Imagine. Each ...
- 23
0
votes
2
answers
326
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 ...
- 29
0
votes
0
answers
34
views
Erdas - Export LUT Instead Of Real Values
I am using Erdas 2022.
I have NDVI index of an imaging, and after creating it, the view shows a LUT which is not the original pixels, which is essentially the automatic stretching of the program.
I ...
- 101
0
votes
0
answers
61
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. ...
- 119
0
votes
0
answers
49
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 = ...
- 1
0
votes
0
answers
46
views
Excluding 'No Data' Pixels When Counting number of pixels in an AOI with ERDAS IMAGINE
I'm working with Landsat imagery in ERDAS IMAGINE 2014 and have encountered an issue with 'no data' pixels within my Area of Interest (AOI). The AOI includes unwanted 'no data' pixels that are ...
0
votes
0
answers
72
views
What does the metadata tell you about an image and its sensor?
I'm using a software called ERDAS and my tutor says that the Metadata can be used to detect which sensor your image came from. Is there anything you can tell me that links the metadata to the sensor?
...
0
votes
0
answers
22
views
Merging Subswaths with ERDAS Imagine
Does anyone have experience with merging subswaths of a SLC Sentinel 1 image in ERDAS Imagine? I cannot find the right function for it.
0
votes
1
answer
467
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 ...
- 8,446
0
votes
0
answers
102
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 ...
0
votes
1
answer
185
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, ...
- 1
0
votes
0
answers
138
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(...
- 327
0
votes
0
answers
210
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 ...
- 1
0
votes
1
answer
370
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, ...
0
votes
1
answer
200
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 ...
0
votes
1
answer
559
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 ...
- 33
0
votes
0
answers
75
views
Offline image export in Google Earth Engine
Can an image be exported when I am not online in Google Earth Engine?
- 1
0
votes
1
answer
771
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....
- 17
0
votes
0
answers
167
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 ...
- 1
0
votes
1
answer
226
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: ...
- 21
0
votes
1
answer
863
views
how to print all the images of an Image Collection
I have to print all the images (layers) of ImageCollection because it is easier to select manually the best image.
Is it possible?
var point = ee.Geometry.Point([8.73727, 45.81165]);
// Import the S-...
0
votes
0
answers
111
views
Opening images layer stacked on ArcMap into ERDAS
I noticed that ArcMap can open almost anything but if I do a band combination or a supervised or unsupervised classification on ArcMap I cannot open it on ERDAS.
Is there a way around it?
0
votes
0
answers
558
views
OpenLayers is blurring the ImageLayer (Raster Image)
I'm trying to use an 8192 x 4096px Image as a layer in OpenLayers and my code is as followed
import Map from "ol/Map";
import View from "ol/View";
import TileLayer from "ol/...
- 75
0
votes
1
answer
135
views
QGIS Custom variable or Function to extract image "compass direction" from image url/path
I would like to create custom variable or a custom function to extract only "EXIF Camera Direction" of image from URL/path (field) of JPG images into QGIS. So i can directly write the ...
0
votes
1
answer
56
views
VIIRS and image export
I am trying to export a VIIRS night image, a clipped country but the result is just a black picture. How can I do this?
var visualize = {
min: 0.0,
max: 60.0,
palette: ['#303030', '#696969', '#...
0
votes
1
answer
273
views
Doing Layer stack in ERDAS Imagine
I am trying to do "Layer Stack" of Landsat 5 Surface Reflectance image in ERDAS Imagine 2015 but every time i get output as black and white image. Though pixels have RGB values but still ...
0
votes
1
answer
475
views
Adding list to Image Properties using Google Earth Engine JavaScript API
I am trying to iterate through an image collection and add a property to each image that is taken from a list. For example I want image 1 in the collection to have the property list item 1.
I first ...
0
votes
1
answer
611
views
GeoServer returns blank image (completely transparent)
I have a recent issue occur where for certain styles GeoServer is returning blank, completely transparent images.
See here for an example.
GeoServer version is 2.17.2
This is occurring with GetMap ...
- 598
0
votes
0
answers
191
views
Use of ratio in ImageWMS in OpenLayers
I am trying to understand the setting of ratio in ol.source.ImageWMS but I am not succeeding. I already understand the ratio: 1, as there is not much to understand there. ratio: 1 = browser viewbox. I ...
- 81
0
votes
0
answers
77
views
Using Landsat MSS Collection 1
When I use Landsat MSS Collection 1 dataset in my roi, I can't get any images from Tier1, but Tier2 I can.
This is code from someone to count the number of image, each year.
When I switch to Tier2 ...
0
votes
0
answers
102
views
Exporting grouped item as image using ArcGIS Pro
I have imported an image and added text surrounding this image into a layout through ArcGIS Pro.
I intend on using this as a logo for other maps produced by my team.
How do I export this grouped item ...
- 69
0
votes
1
answer
3k
views
How to read and plot multiple TIFF files in Colaboratory?
I'm new in python and I would like to know how I can read and plot MULTIPLE TIFF files in Colaboratory with (maybe) a for loop.
Here is what I did for a single TIFF image:
from google.colab import ...
user198557
0
votes
0
answers
230
views
Only one image is showing up on OpenLayers map
I can only get one of the following DEM_image PNGs to show up on my map. Its always the first one "DSS.layer.DEM.image0" that shows up, the rest do not render. I can see in the console ...
0
votes
0
answers
119
views
Symbol recognition on a scanned image (map)
I have a specific task and I'm looking for possible approaches. What I'm trying to do is this:
I have a high resolution (600dpi) scanned, and georeferenced image of a map, and I need to be able to ...
0
votes
0
answers
79
views
What is the difference? : in xdg-open in linux and QGIS in window
I made a rgb raster image with using GDAL script in the Linux (Centos7) environment.
When I open the rgb image with xdg-open, it's too dark, but when I open it in the QGIS, it is clear and more ...
- 13
0
votes
0
answers
533
views
Merge raster in QGIS
I have a huge problem that I can't solve even after trying everything I can think of. I want to merge 4 rasters as you can see in this image
I have Landsat 8 images, to not have a problem with bands, ...
- 1
0
votes
0
answers
1k
views
Batch uploading images into Google Earth
I am looking to visualize images on Google Earth. I have a couple thousand images that I would like to batch upload in order to verify results from a field study. I have a KMZ file with placemarks ...
0
votes
1
answer
265
views
Converting 4 Band RGBA to 2 Band LA (Gray + Alpha) mode while keeping georeferenced data in GeoTiff
I created some GOES-16 images where the dark/night side of the visible image is transparent (alpha channel). I used satpy's DayNight Compositor to make the night side of the image transparent, while ...
