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21 votes

Image collection to Single Image in Google Earth Engine

// UPDATE: The easiest way is now toBands(). var merged = MOD1.toBands(); // For completeness, this is the iterate() way: var mergeBands = function(image, previous) { return ee.Image(previous)....
Nicholas Clinton's user avatar
14 votes
Accepted

How to Combine Two Image Overlaying Into One Image in Google Earth Engine?

Never mind my impatience, It was easy. I just convert them to image collection and then create mosaic of it! var combined_img = ee.ImageCollection([img_1, img_2]).mosaic();
Waleed93's user avatar
  • 322
13 votes
Accepted

Adding excel table to QGIS print composer?

Save your excel file as CSV file go to Add Vector Layer in QGIS and navigate to your CSV file and load it In the print composer, go to Add attribute table, as you can see below: Select the Source ...
ahmadhanb's user avatar
  • 41.1k
11 votes

Adding site photos to a print composer atlas in QGIS

It looks like so hard without any script. So I tried a solution like below. Sample data: margin and interval Script: Copy/paste the script to QGIS Python Editor. Set layout_name, layer_name, ...
Kadir ┼×ahbaz's user avatar
10 votes
Accepted

Is this satellite image of a blackout real?

NASA's "Black Marble" is not one satellite image, but a mosaic gathered over several weeks and heavily edited: The data was acquired over nine days in April 2012 and thirteen days in October 2012. ...
HDunn's user avatar
  • 8,666
9 votes
Accepted

Using Open Google Earth cache file in QGIS?

I don't believe qgis is able to process Google Earth cache file. I advise you not to wast your time. Instead use SAS Planet alternative. It stores tiles locally as file:///D:/Software/SAS.Planet/...
Ilyes Tounsi's user avatar
9 votes
Accepted

Automatically export each item in a layer as an image

According to the ideas posted here I suggest you to follow these steps: Create a non-geometry layer with the names of your categories. For example, a virtual layer with SELECT DISTINCT (...
jpinilla's user avatar
  • 3,230
8 votes
Accepted

Creating vector (with lines/polygons) from raster based on paper map in QGIS

Not automatization (strictly speaking), but one good helper tool would be Gimp Selection Feature plugin. It enables us to access Fuzzy selection tool of Gimp 2.10, and returns a polygon layer taken ...
Kazuhito's user avatar
  • 31k
8 votes
Accepted

Noisy lines in all scenes for Landsat 7?

You should read about the Landsat 7 ETM+ SLC-off data This refers to all Landsat 7 images collected after May 31, 2003, when the Scan Line Corrector (SLC) failed. These products have data gaps, but ...
Yogesh Chavan's user avatar
8 votes

View more than three pictures in the image viewer of QGIS

It appears you can do this by explicitly setting a width and a height for the image in the section Integrated Document Viewer (to the bottom-right of your last screenshot). Instead of the images ...
Matt's user avatar
  • 17.6k
7 votes

Adding site photos to a print composer atlas in QGIS

I know you mentioned you do not code, but your task may be cumbersome in click and drag software, because you want paired images-filenames; your goal may be accomplished with very few (8 to be precise)...
Elio Diaz's user avatar
  • 3,486
7 votes

Overlaying image with polygon shapefile in QGIS

Create a new layer, draw a polygon covering your area Difference geoprocessing tool, with your polygon as input, and the blocks as Overlay. Set a dark grey or black symbol Now you have a polygon with ...
Bera's user avatar
  • 74.8k
6 votes

I cannot find full Sentinel-2 scenes

As far as I know, only tiled scenes are distributed since october on the ESA hub, so you will need to download all the tiles. Note that there are several alternative websites to download S2 data with ...
radouxju's user avatar
  • 49.8k
6 votes
Accepted

I cannot find full Sentinel-2 scenes

I acknowledge in advance that the following links don't provide you with direct access to the full scenes, but I do think that they are useful resources for searching the Sentinel-2 archive. In ...
dmci's user avatar
  • 4,902
6 votes

Detect the coordinate reference system based on an image

What you want is the projection, not the coordinate reference system. You need to look at the lines of longitude and latitude and work out from their curvature what possible projections it might be. ...
Spacedman's user avatar
  • 65.1k
6 votes
Accepted

Earth engine error: Error: Invalid argument: 'image' must be of type Image

You are trying to export an ImageCollection. The MODIS product you are using has daily images, thus there are 29 images in your collection. The export to Drive only allows images, not collections, ...
Kersten's user avatar
  • 9,917
6 votes
Accepted

When adding properties to an image, no longer allowed to add to Map

Some functions in Google Earth Engine make the object 'loose' its type. If you have a look at setMulti documentation, it says that returns an Element not an Image. So you have to tell Earth Engine ...
Rodrigo E. Principe's user avatar
6 votes

Exporting map error from QGIS

In the Layout, right click on the page and choose "Page Properties...". In the side panel "Item Properties", make sure "Exclude page from exports" is unticked.
Matthew's user avatar
  • 61
6 votes
Accepted

PyQGIS: Inserting a logo image in the layout

The following should more less do what you want project = QgsProject.instance() manager = project.layoutManager() layout = manager.layoutByName('your_layout') layoutItemPicture = QgsLayoutItemPicture(...
ThomasG77's user avatar
  • 31k
5 votes

Image disappeared after changing CRS in QGIS?

The image was projected to new CRS. Set the map to Zoom Full or select the layer and choose Zoom to layer to see the image.
Shiko's user avatar
  • 2,893
5 votes
Accepted

How to drape image on surface using open source software?

You can use Qgis2threejs plugin in QGIS to view an image in 3D. It has great options and potential capabilities that you can see in the plugin's documentation. Then plugin can be downloaded from QGIS ...
ahmadhanb's user avatar
  • 41.1k
5 votes

Sentinal-2 Georeferenceing

That depends what processing level you are referring to. Most data is delivered as Level-1C. According to the Sentinel-2 documentation: Level-1C product provides orthorectified Top-Of-Atmosphere (TOA)...
Kersten's user avatar
  • 9,917
5 votes
Accepted

What does 4.5 mm resolution mean?

PROJCS details the coordinate system, the first line is: PROJCS["WGS 84 / UTM zone 32N", and then it says: UNIT["metre",1, which means that these numbers: Origin = (357377.652999999991152,...
Spacedman's user avatar
  • 65.1k
5 votes

Convert PNG image to Shapefile in QGIS

Assuming your image is black-and-white only, you georeference it and then use extraction - contour lines to extract all the black lines as a shapefile. Since you get rather pixelated polygons, you'll ...
Erik's user avatar
  • 16.5k
5 votes

How to insert multiple images in the Atlas in QGIS?

Just use expression to link the attribute as a source for your image like you do in case CROSS SECTIONS attribute [% "Cross-Sect"%] In your case use: <img src=[% "PHOTOS"%] width="600" height="...
Oto Kaláb's user avatar
  • 6,925
5 votes
Accepted

Compress Large size of satellite image by Open Source GIS software

When in doubt follow Paul Ramsey's GeoTiff compression for dummies strategy. gdal_translate \ -co COMPRESS=JPEG \ -co PHOTOMETRIC=YCBCR \ -co TILED=YES \ 5255C.tif 5255C_JPEG_YCBCR.tif and ...
Ian Turton's user avatar
  • 82.2k
5 votes
Accepted

Filter out duplicate Sentinel-2 Images form Earth Engine Image Collection by date

You can compare the ImageCollection with a List of Images and generate a specific property and filter. var sentinel = ee.ImageCollection("COPERNICUS/S2") .filter(ee.Filter.eq('MGRS_TILE', "36RYV")...
francofrolla's user avatar
5 votes

Seeking GIS tool to automatically extract polygon geometries from images

GlobalMapper [Blue Marble] can do the extraction quickly. Using your image here is an example using the Equal Value extraction. and choosing 'pick from map' and using the sampler tool to create area ...
Mapperz's user avatar
  • 50k
5 votes
Accepted

Get rid of no-data part of raster in Python

Have a look at rasterio.windows.get_data_window to get a window of the valid data, rasterio.windows.transform to calculate a new affine transform, You would then use windowed reading to read only ...
user2856's user avatar
  • 67.2k
5 votes

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

Do not select Field type: string, but rather Edit (see screenshot). There, you can define the path to your raster image(s). Be aware: a string in QGIS must be enclosed in single quotes: '. Use forward ...
Babel's user avatar
  • 73.1k

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