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2803 Topics
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SentinelHub User
posted in Sentinel Hub
Is it possible to specify resolution for an AwsTileRequest?

I want to load 20m raw sentinel imagery into a numpy array using AwsTileRequest following the example in the docs but it seems to be downloading all of the raw images in 10, 20, and 60 meter resolution. Is there a way to only download, for example, the 20 meter files? I am also interested in downloading the SCL layer but the default configuration rejects that value because it is not in the list of acceptable band options. Here is the command that I am running: from sentinelhub import AwsTileRequest request = AwsTileRequest( tile='38LPH', time='2017-12-15', aws_index=0, bands=['B02', 'B03', 'B04', 'B08', 'SCL'], metafiles=None, data_folder='/tmp/sentinel_test', data_collection=DataCollection.SENTINEL2_L1C )

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S
SentinelHub User
posted in Sentinel Hub
Linear Interpolation Problem in overlapping DataTake areas using WCS requests

Hi, Using the eo-learn framework, I came across some issues when sampling Sentinel-2 L1C in eopatches. Image 1 in overlap area - 2018-11-21 07:22:24:ImgBB frame0000032 hosted at ImgBB Image frame0000032 hosted in ImgBB image 2 in overlap area - 2018-11-21 07:22:39:ImgBB frame0000033 hosted at ImgBB Image frame0000033 hosted in ImgBB As you can see above, it picks up two images on the same day, with a few seconds acquisition time difference. That is not surprising as it is an area where the two Data Takes overlap. Scihub illustrates the overlap:ImgBB Data-Take-overlap hosted at ImgBB Image Data-Take-overlap hosted in ImgBB So far it is understood. I am expecting these gaps present at certain timestamps to be removed when performing interpolation because I am interpolating 36 timestamp to 10 interpolated output values. However, it turns out differently and two issues turn up: First and last dates of the int

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S
SentinelHub User
posted in Sentinel Hub
How to analyse and acquire sea state information using Satellite images in Python?

There are some questions related to this on the Internet, but I still cannot comprehend clearly the way to do this, being completely new to this stuff. Recently, I came across Sentinel Hub which facilitates using Python to extract Satellite images within a given time period. I believe it can get me to the point of extracting useful information from images. However, what I am looking for is, that I would like to acquire satellite images for a given time period (say September 2017-September 2018) of a particular location (eg. Leven, Fife Coast), and get information such as sea state/weather/wave height/ice buildup etc. for the same time period as a time series. What is the best way to do this in Python, and is there any example notebook/library which can help accomplish this. Thank you!

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S
SentinelHub User
posted in Sentinel Hub
Empty images when requesting Sentinel 1 (before failure )

Hello, I want to access sentinel-1 images but for some reason I get blank image. I use time interval before the failure (23/12/21). This is my evalscript: evalscript_sen1 = """ //VERSION=3 function setup() { return { input: ["VV","VH"], output: { bands: 2 }, sampleType:"FLOAT32" }; } function evaluatePixel(sample) { return [10 * Math.log((sample.VV)+0.0001) / Math.LN10 , 10 * Math.log((sample.VH)+0.0001) / Math.LN10]; } """ Then I have list of dates (which I generated with wms get dates functuin). I run this dates list in order to access the images by date, but all I get is blank image: #get dates wms_s1= WmsRequest( data_collection=DataCollection.SENTINEL1_IW, data_folder='fake', layer='BANDS-S1-IW', bbox=bbox, time=time_interval, width=bbox_size[0], height=bbox_size[1], image_format=MimeType.TIFF, time_difference=datetime.timedelta(hours=2),#get one image when there is small time

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S
SentinelHub User
posted in Sentinel Hub
Use FIS to only get dates (without stats)?

Hi, I would like to create a simple web app using javascript to query and display WMS tiles from Sentinel-Hub. To know the available dates (and not just get the latest one by WMS) I know I can use FIS on the BBOX of interest to get the available dates, along with simple statistical values which I do not need. Is it possible to use FIS to get only the dates of available products for some BBOX (and a given MAXCC parameter) without making the Sentinel-Hub platform compute statistics, which is slow? Thanks

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S
SentinelHub User
posted in Sentinel Hub
S2L1CWCSInput to WcsRequest or Other Method?

Hi everyone, I was importing and creating EO Patches the following way. Defined input_task as:input_task = S2L1CWCSInput(layer = 'BANDS-S2-L1C',resx='10m', resy='10m', maxcc=1.0) And then later used it in: # define workflow workflow=LinearWorkflow(input_task, true_color, add_ndvi, add_ndwi, add_fdi, cloud_classifier_task, water_detection, combine_mask, save) # run workflow result = workflow.execute({input_task: {'bbox': bbox, 'time_interval': time_interval}, save: {'eopatch_folder': 'eopatch'}}) patch = result.eopatch() return patch Which was used in a loop to get many patches in an area, therefore providing a specific bbox each time. I paused working on the project for a couple of weeks (didn’t change anything) and it feels like everything has fallen apart. S2L1CWCSInput no longer loads from eo-learn. I figured there’s also WcsRequest, so I changed my code to define input_task within my loop the following way: # input task # PROBLEM HAPP

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S
SentinelHub User
posted in Sentinel Hub
CLM-error in eoLearn-slovenia Land Cover Classification script

Hi SenHub-Team,I tried the eoLearn-slovenia Land Cover Classification script.I have a problem with download the patches. Once it download the data for slovenia. After that I get only error messages for slovenia and in this case my area:It has Problems with the CLM.  Has something change after?:https://shforum.sinergise.com/t/cloud-masks-available-as-clm-clp-band/2113What can I do?Thank you very much for your work.Greetz

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S
SentinelHub User
posted in Sentinel Hub
Batch processing API request.json

I have been working on using batch process API to acquire and process S1 data over a large area and store the resulting tif files in an S3 bucket. I have some questions about the batch process API that I could not find in the documentation:Is there a limit to how many simultaneous batch requests I can submit? I noticed that with every request there is a request.json file that is generated and stored in the S3 bucket. Is there a way to control the name of the file? For example, adding request_id or date and time? This will be great for debugging or data QA later on.Thank you 

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S
SentinelHub User
posted in Sentinel Hub
No module named 'sentinelhub.common'

Hi, While exploring “https://github.com/azupanc/eo-ex/blob/master/notebooks/water-level-monitor/theewaterskloof_dam_water_level.ipynb” I am stuck at line “from sentinelhub.common import BBox, CRS”.The error is :-No module named ‘sentinelhub.common’. What could be the reason for this problem?

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S
SentinelHub User
posted in Sentinel Hub
Visualize pleiades image using process API

Hi, I have purchased a pleiades image. I can visualize it using EO browser, however , visualizing it with python doesn’t work.I have followed this tutorial in order to visualize the image. this is what I did: # Initialize SentinelHubBYOC class byoc = SentinelHubBYOC(config=config) #airbus plaiedas my_collection = byoc.get_collection('THIS_IS_SECRET') print(f"name: {my_collection['name']}") print(f"id: {my_collection['id']}") #get list of tiles inside the collection tiles = list(byoc.iter_tiles(my_collection)) #convert it to ByocTile dataclass tile = ByocTile.from_dict(next(byoc.iter_tiles(my_collection))) #visualized tiles tile_iterator = byoc.iter_tiles(my_collection) tiles_for_visualized = [] #should be for in in range(#number of images) for i in [0]: tiles_for_visualized.append(ByocTile.from_dict(next(tile_iterator))) tiles_gdf = gpd.GeoDataFrame( tiles_for_visualized, geometry=[t.cover_geometry.transform(CRS.WGS84).geometry for t in tiles_for_visualized

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S
SentinelHub User
posted in Sentinel Hub
Download PlanetScope NDVI from EO Browser is not clipped to my polygon

How can I delete the black part of the image so I can get just the NDVI in my AOI?

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S
SentinelHub User
posted in Sentinel Hub
Image deformation

Hi, I’m trying to use the python module to acquire the S-2 NDMI for a specific area, but when I save them to my local drive they have some sort of glitch, like it was a result of merging two images. I checked the EO Browser and they seem fine. It only happens using the Python module. Image is attached.

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S
SentinelHub User
posted in Sentinel Hub
Sentinel-hub process API documentation

When looking at this link - https://docs.sentinel-hub.com/api/latest/data/sentinel-1-grd/examples/#s1grd-orthorectified-decibel-gamma0-vh-between--20-db-and-0-db-png I can see examples of process API for Sentinel-1. When I look at this example: S1GRD orthorectified linear gamma0 VV, ascending orbit direction, GeoTIFF in EPSG:32648 (UTM zone 48N) I can see for example the property: “backCoeff”: “GAMMA0_ELLIPSOID”. Is there any documentation where I can see which other options I can use for the property “backCoeff”? or any other property for that matter (e.g., orbitDirection or polarization )?

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S
SentinelHub User
posted in Sentinel Hub
No gml file in 2022

Hi team. I was trying to download Sentinel-2 L2A files. I used this code. request = AwsTileRequest( tile=tile_name, time=date, aws_index=aws_idx, data_folder=f"./{year}", data_collection=DataCollection.SENTINEL2_L2A, metafiles=["tileInfo", "qi/MSK_CLOUDS_B00"] ) This code gave me image with cloud gml file before 2022. However, it gave me “SHRuntimeWarning: File in location s3://sentinel-s2-l2a/tiles/16/S/CG/2022/7/31/0/qi/MSK_CLOUDS_B00.gml is missing” error messages when I tried to download L2A image in 2022. How can this problme be solved? Thanks a lot.

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S
SentinelHub User
posted in Sentinel Hub
Sentinel-3 Bottom of Atmosphere Reflectances

Hi everyone,I have been trying to find out if it is possible to access Sentinel-3 Bottom of Atmosphere Reflectances using the Sentinel Hub services but haven’t been successful in finding either a positive or negative answer so far. Does anyone know if this is possible?I could also download L1 radiances, convert to reflectances and then apply an atmospheric correction with e.g. the Rayleigh correction within the ESA SNAP software. It looks like I could access Sentinel-3 OLCI L1B data but apparently already processed and not in the native netCDF file format (in .SEN3 folders) which I would need in order to use the data with the SNAP software.Thank you a lot in advance for your help and advice!best

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S
SentinelHub User
posted in Sentinel Hub
Cloudless Sentinel-2 image sourced from a single orbit

I have been working on obtaining cloudless mosaic images but have been struggling with strong orbit-wise artifacts in some areas (see my post). As an alternative to seamless mosaics I am interested in obtaining orbit-wise cloudless images. The cloud-filling results in my tests so far look really good but the stripes introduced by the mosaicking process are going to complicate downstream applications of the imagery. Is there a way to specify a request to only pull images from a particular orbit rather than sourcing images from multiple orbits? For example, in the image below I would only want to pull raw images from the center orbit (relative orbit 54) and avoid pulling images from relative orbits 97 and 11. Is the Sentinel product ID available in the scenes object? If it is then I could parse the relative orbit from the product ID: This scene is in relative orbit 31: S2A_MSIL1C_20170105T013442_N0204_R031_T53NMJ_20170105T013443

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S
SentinelHub User
posted in Sentinel Hub
How to calculate the Processing Unit

Hello. We are trying to calculate the Processing unit per hectare. Here is the example which we use for our calculations. Please, can you give me some feedback if we calculate it correctly for NDVI?Your example on website:Output size: 0,01 (20x20 px)Input bands : 2/3Output format: 1Number of data sample : 1Orthorecification : 1PU = 0,01 x 2/3 x 1 x 1 x 1 = 0,0067 PUThe example on your website is designed for 20x20 px = 4h a = that is why Output size / multiplication factor : 0,01.Also you define that the minimum value of multiplication factor is 0,01 which corresponds to an are of 0,25km2 = 25 ha.Does it mean that the processing unit for 25ha in same example is the same ? 0,0067 PU ?If I am correct, then processing unit for 250 ha would be : 0,0067 x 10 = 0,067 PU. Is that correct ?Thank you for answering

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S
SentinelHub User
posted in Sentinel Hub
What's the best example of how to dwl S1 & S2 tiles from AWS w batch API

I’m wondering if you could point me in the right direction with re to the best way to download S1 and S2 data - I have a list of S1 and S2 tiles I want to download and I would like to pass on that list to query what’s in the archive and move to my S3 bucket. I’ve seen the jupyter notebook on batch processing heregithub.com sentinel-hub/sentinelhub-py/blob/master/examples/batch_processing.ipynb { "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "# Sentinel Hub Batch Processing\n", "\n", "A tutorial about [Large area utilities](./large_area_utilities.ipynb) shows how to split a large area into smaller bounding boxes for which data can be requested using [Sentinel Hub Process API](./process_request.ipynb). This tutorial shows another way of doing that.\n", "\n", "**Sentinel Hub Batch Processing** takes the geometry of a large area and divides it according to a specified tile grid. Next, it executes processing requests for each til

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S
SentinelHub User
posted in Sentinel Hub
Plain and simple downloading S5P native .nc files

Hi everyone, I have I problem. I was downloading data using dhusget. Now it starts to be the past. So I want to download native .nc file of Sentinel5P L2 products. Lets say CO. I have accounts credentials with client id and secret key and still don’t know how to do this. I have a following code wich actually find the products but I don’t know that to do next. here is the code #!/usr/bin/env python3 import requests url = "https://creodias.sentinel-hub.com/api/v1/catalog/1.0.0/search" headers = { "Content-Type": "application/json", "Authorization": "Bearer <mytoken>" } data = { "collections": [ "sentinel-5p-l2" ], "datetime": "2020-04-01T00:00:00Z/2020-04-01T23:59:59Z", "bbox": [ -9.037709, 38.822591, 35.272283, 67.609221 ], "limit": 10, "filter": { "op": "and", "args": [ { "op": "=", "args": [ { "property": "s5p:type" }, "CO" ] }, { "op": "=",

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S
SentinelHub User
posted in Sentinel Hub
Computing processing unit cost for user request

Hello, I am trying to compute the processing units that will be spent based on user request while using process and statistical APIs as per the processing units definition page (https://docs.sentinel-hub.com/api/latest/api/overview/processing-unit/). I wish to calculate the processing units that will be spent on user request. In this regard, I wish to compute the size of the requested image based on the bounding box input by the user. The request builder option on sentinel hub shows the output size of the image in width and height. I wish to compute the same using the user defined bbox in my code for a fixed resolution of the image, so that I can compute the processing units that will be spent on the basis of the size of the image. Could anybody please guide me in this regard to compute the size of the image (no. of pixels in width and height) using the bounding box and thereby in computing the processing units. I have attached screenshots of the output that is shown on request builder

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S
SentinelHub User
posted in Sentinel Hub
ARI1 (Anthocyanin Reflectance Index) value range

Dear members in the forum, In the description of the ARI1 (Anthocyanin Reflectance Index), it is written that its values ranges from 0 to 0.2 (see attached screenshot). But when I used its given formula [(1/R550)-(1/R700)], I get values from -3 to 17. I checked images from different dates but the values are not in the range from 0 to 0.2. What could be possible cause of wrong range, does it require any conversions?

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SentinelHub User
posted in Sentinel Hub
Imagery on the Copernicus Open Access Hub

Been downloading Sentinel 2 imagery on the Copernicus Open Access Hub for a while now. However since about 3 days ago, every request for retrieval after adding my imagery to the cart says “status failed”. Any idea why and what I can do about it?

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SentinelHub User
posted in Sentinel Hub
WCS request in Python for PlanetScope delivers zero arrays as a response

Hi, I’m using WCS request in Python to query PlanetScope data that I recently ordered. I can see the data in EO Browser, however, when I run a request in Python, I receive zero arrays as a response. I can, however, iterate via timestamps, so I think the query goes thorough (so the polygon intersect with purchased imagery), however, it won’t actually return correct values. As an input, I feed correct instance and collection IDs, as well as am referring to a pre-defined layer (True Color). Any idea of what might be the issue here? Thanks! Edit: I’ve just ran a similar request for SPOT data where I only substituted instance and collection IDs, and it went through without issues, so I would assume there is some sort of issue with PlanetScope? Edit2: Below is an example of WCS request I’m using: config_ps = SHConfig() INSTANCE_ID_ps = ‘d46e3de6-2ee5-masked’ config_ps.instance_id = INSTANCE_ID_ps collection_id_ps= ‘25c2052c-3cd6-masked’ layer_ps = ‘1_TRUE-COLOR’ wcs_ps_request = WcsRequest(

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SentinelHub User
posted in Sentinel Hub
Geo-visualization Dashboard using Sentinel Hub API

Hi Team! I kindly need your guidance on something that regards Sentinel Hub. I’m totally new to this and I wanted to develop a small web GIS platform that will be later used for crop monitoring. Right now, I just needed to develop a portion of it that can allow me to either import shapefile or json and also be able to draw a polygon in my area of interest. I also wanted to be able to extract the NDVI of the area of interest and at least be able to plot the NDVI values say over time. I will appreciate any assistance. I would want to know what tools I can use to develop the said portion Thanks!

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S
SentinelHub User
posted in Sentinel Hub
NDVI change between two dates (WMS?)

What is the most efficient method to create a WMS service showing the change between two dates? I have successfully set up a NDVI WMS service for a single date, and understand the “evaluate pixel” evaluates the pixel for the date. But is there a way to evaluate the pixel for two dates to get the change of the NDVI, and serve that as the layer in the WMS? If this is not possible, then what would be the best approach to analyze the change between two dates? My thought would be getting the array from both dates and doing the analysis once data is received from the service, but before I do so I thought I’d pose the question first. Due to some inexperience in Sentinel Hub Python API usage, I thought it may be best to ask on this forum 😃 Thank you in advance.

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