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Sentinel Hub

Sentinel Hub, powered by Planet Labs, allows you easily perform spectral analysis and interact with Planet data without needing other software. Build solutions, analyze data at scale, and find insights in this powerful tool.

  • 2,548 Topics
  • 9,047 Replies
2548 Topics
S
SentinelHub User
posted in Sentinel Hub
Array exception while exporting timelapse

Hi, I found a new error using the timelapse creator. It seems to be the same error as my last post (Array buffer allocation failed on timelapse export in MPEG4) but this time it’s also happening when trying to export GIF. Here is the step to reproduce: Have a timelapse of an area of 685x383 px, 3fps, delay last frame enabled, fade transition, and fade duration to 1. Coordinates : {“type”:“Polygon”,“coordinates”:[[[6.228905,44.558919],[6.494681,44.558919],[6.494681,44.453144],[6.228905,44.453144],[6.228905,44.558919]]]} If I try to download the gif, the download hangs and the console shows the following errors : Seems to be another memory error. Thanks for the help. Regards,

33
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Sentinel 1 or 2 previous years data onwards 2005

Hello all, I am basically using this custom script Custom Script for data access of the same region mentioned in this script. I am working on a urban prediction model. For this I have to require previous years data too. Is there any way by which I can get previous years data using the same custom script. Please suggest me a solution how can I get data of previous years too. Thanks & Reagrds

32
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Get Sentinel L1C data from AWS as per cloud cover and location

Hi all, I have to download a large Sentinel 2 dataset in AWS filtered on the basis of time, location and cloud cover. I have previously used GEE to get data as per these filters. But I am not able to understand how to filter the Sentinel 2 data at AWS and then transfer this filtered data to another S3 bucket. Any tutorial to solve this issue would also be very helpful. Thanks.

23
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
How to zoom in images downloaded from AWS s3 bucket

Recently I managed to use Sentinel images which I obtained from AWS s3 bucket to monitor deforestation over a period of time. I was able to obtain the image below, I was wondering is there a way I can make images more zoomed in. Full blog Here

31
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Data values from visualize analytical and Copernicus scihubare are different

I compared Sentinel-2 Band-8 from Copernicus scihub and from visualize analytical. The pixel values are different from these two sources. Ex. 0.27 in visualize analytical but 0.36 in Copernicus scihub. Any explanation could be? I understand that visualize analytical did some Geo transformation, but I think the difference cannot that much.

196
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
LWCI (leaf water content index)

Hi. I try to use the script in the follow link: Sentinel-Hub custom scripts Sentinel-2 RS indices A repository of custom scripts that can be used with Sentinel-Hub services. but nothing happend (I see all in black or white). Thank you in advance. FB

62
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
400 Client Error: Bad Request -Failed to evaluate script! evalscript.js:5: SyntaxError: Unexpected identifier

Hello! I’m trying to use sentinel hub request in order to retrieve senitnel-2 bands together with calculated NDVI, but I’m getting this error whenever I try to get the data: DownloadFailedException: Failed to download from:https://services.sentinel-hub… with HTTPError: 400 Client Error: Bad Request for url: https://services.sentinel-hub.com/api/… Server response: "{“error”:{“status”:400,“reason”:“Bad Request”,“message”:“Failed to evaluate script!\nevalscript.js:5: SyntaxError: Unexpected identifier\n input: [“B02,“B03”,“B04”,“B08”,“CLM”],\n ^^^\n”,“code”:“RENDERER_EXCEPTION”}}” I could not find the problem with my evalscript. Thi sis my evalscript: eval_sen2=''' //VERSION=3 function setup() { return { input: ["B02,"B03","B04","B08","CLM"], output: { bands: 4, sampleType: "FLOAT32" } }; } function evaluatePixel(sample) { if (sample.CLM == 1) { return [null] } const ndvi = index(sample.B08, sample.B04); return [n

52
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Creating a custom (and free) CalTopo layer with Sentinel imagery?

I’d like to help create a custom (and free) CalTopo layer with Sentinel imagery. To start, I’d go to CalTopo dot com and select “Add/Custom Source”. I then need to add 1 or 2 URL’s for “URL Template” and/or “Auto-Configure URL”. As an example, here is a CalTopop map with a custom layer that has snow-depth estimates. Default Map The “URL Template” for the custom “Snow Depth” layer is:Export Map (NWS_Observations/NOHRSC_Snow_Analysis)},{right},{top}&bboxSR=102100&imageSR=102100&size={tilesize},{tilesize}&f=image Is there a URL such as this I can use to create a custom (and free) CalTopo “Sentinel Imagery” layer? Thanks!

42
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
How to get NDVI index value of the pixel

so I am using WMSLayer and I have successful placed my clipped image on the map but I want a situation where when I hover most preferred or on click I get the ndvi, ndwi or savi value of image layer Here is my evalscript that I am using in my OGC. //VERSION=3 //This script was converted from v1 to v3 using the converter API //NDVI EVALSCRIPT if (dataMask == 0) return [0,0,0,0]; //ndvi var val = (B08-B04)/(B08+B04); return colorBlend(val, [-0.2, 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 ], [[0, 0, 0], // < -.2 = #000000 (black) [165/255,0,38/255,1], // → 0 = #a50026 [215/255,48/255,39/255,1], // → .1 = #d73027 [244/255,109/255,67/255,1], // → .2 = #f46d43 [253/255,174/255,97/255,1], // → .3 = #fdae61 [254/255,224/255,139/255,1], // → .4 = #fee08b [255/255,255/255,191/255,1], // → .5 = #ffffbf [217/255,239/255,139/255,1], // → .6 = #d9ef8b [166/255,217/255,106/255,1], // → .7 = #a6d96a [102/255,189/255,99/255,1], // → .8 = #66bd63 [26/255,152/255,80/2

32
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Process API - how to handle 'exceeded limit'

Hi there!I’m experimenting with the Process API through the python library, so far they are very practical and intuitive to use.However, I do have a couple questions since I find the documentation a bit lacking on some aspects, in particular:Is the output file always called “response.tiff”, or can it be customized? with large areas, I noticed that the requests consume all the processing units per minute available. This is not an issue per se, however the get_data call does not raise any exception and still returns a completely blank image while printing a warning “rate limit exceeded”, which is not ideal. How should I handle this? Is there a way to check whether the response was successful or generated a “rate limit exceeded” error? Or even better, could the client be configured so that the requests per minute are limited/scheduled over a longer period to avoid such problem?Thank you very much, and sorry in advance if this info is available somewhere, I couldn’t find anything relevant.

277
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Problems in my access to the WMS service endpoints in QGis

Last week my account had reached the limit of processing units. So we upgraded to the Basic plan and the purchase has already been approved. However, when entering the WMS URL in QGis, to add a new layer, I get the following error: Download of capabilities failed: Error transferring https://services.sentinel-hub.com/ogc/wms/{My ID}? SERVICE=WMS&REQUEST=GetCapabilities - server replied: Forbidden I’ve been using WMS for over two years and I’ve never received this error. It occurs both in different versions of QGis as well as in different internet networks. Can anybody help me?

71
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
WMS service does not show image data

Hi, Created a simple WMS instance through Configuration utility. Edited the map extent for only INDIA. Saved the configuration.On viewing in Playground nothing shows. Edited the preview to Extended_preview. Still nothing shows in playground. Why? Plz. Guide

35
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
How to download high size images?

Hello, I want to download high size images such as 49572x21256. However, unfortunatelly senitnelhub can just provide 2500x2500 size images. Is there any way to solve this problem ? I developed two algorithm but they do not work properly. first algorithm: To collect images: import numpy as np from shapely.geometry import MultiLineString, MultiPolygon, Polygon, shape import cv2 from sentinelhub import ( CRS, BBox, BBoxSplitter, ) import sentinelhub from shapely import geometry patch_x = 30 patch_y = 30 coords_ = [ [ [ 37.8111972, 38.724315 ], [ 43.552852, 38.724315 ], [ 43.552852, 36.614646

1613
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Extracting pixel values along with coordinates into csv

Hi, Is there any way to extract pixel values (NDVI) along with coordinates instead of images into .csv.

71
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Histogram with bin width, low and high edges not working

Hello! I’d like to understand why I’m getting EXECUTION_ERROR in all the intervals requested for a histogram through the Statistics API. This is my request: { input: { bounds: { geometry: { type: 'Polygon', coordinates: [ [ [-58.5940496908065, -31.6685918843253], [-58.593319624491972, -31.6685918843253], [-58.5932561404681, -31.6689160709253], [-58.5929704623402, -31.6692402563939], [-58.5930022043539, -31.6695374254127], [-58.5926847842168, -31.6709151966222], [-58.5928434942853, -31.6711853454431], [-58.5927165262305, -31.6715635524723], [-58.5925260741482, -31.6728602505936], [-58.5926847842168, -31.6732654650436], [-58.5925260741482, -31.6735356070279], [-58.5926213001893, -31.6751564424316], [-58.5923991060933, -31.6755616468621], [-58.5946527890671, -31.6752915107715],

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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Request with specific time

I am wondering if I could get the NDVI layer for the specific dates, as far as I tested it it works for some dates, and for others it returns blank images. Could it be the range, for example can I see the NDVI for the month on January, does that make sense? This is my payload

32
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Very High Resolution Image Mosaic 2018

I found this mosaic image for the German state of Mecklenburg-Western Pomerania, also from Sentinel 2:https://www.laiv-mv.de/static/LAIV/Geoinformation/Dateien/Luftbilder/Satellitenbild-Mosaik_M-V.zip I need this for Europe, too. How can I download the Very High Resolution Image Mosaic 2018? I am logged in, but there is no Download tab. Can I use a GIS program to download the tiles and merge them into mosaic of desired resolution? Thanks!

121
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
JSON Error for Sentinel-2 and Retrieval Error for Sentinel-1

I’m checking up on some imagery around Sri-Lanka and getting the following error message for Sentinel-2: JSON.parse: unexpected end of data at line 1 column 1 of the JSON dataI also had terrible luck looking for Sentinel-1 scenes:There was an issue fetching data for S1_AWS_IW_VVError retrieving additional data!These are theme parts which contain unavailable data sources:Sentinel-1 AWS IW VV+VHThis all worked previously (really simple visualisation stuff), so I’m not really sure what’s going on. Next week, I am (was?) planning to use EO Browser to demo a few things to my students, so I’m eager to sort this out as soon as possible.Thanks in advance

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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Fetching planetscope metadata

I am fetching metadata for S2L2A imagery using the catalog api as shown below which works fine. How should I fetch metadata for planetscope data? Code below works for sentinel-2-l2a const searchParams = { bbox, datetime: `${timeRange.from}/${timeRange.to}`, collections: ['sentinel-2-l2a'], limit: 100, }; const fetchData = () => { fetch('https://services.sentinel-hub.com/api/v1/catalog/1.0.0/search', { method: 'POST', headers: { 'Content-Type': 'application/json', 'Authorization': `Bearer ${token}`, }, body: JSON.stringify(searchParams), }) .then(response => response.json()) .then(data => { console.log(data); setCatalogData(data); const cloudCovers = data.features.map(feature => feature.properties['eo:cloud_cover']); setcloudCover(cloudCovers[0]) toast('Data fetched successfully'); }) .catch(error => { console.error(error); }); };

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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Unable to obtain an access token due to CORS policy restrictions

I’m unable to obtain an access token due to the CORS policy, even after creating a new OAuth2 client from the Dashboard and implementing the necessary JavaScript updates during migration.

136
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Problem with Tiff Image boundary

Hello Team, I have downloaded the sentinel-2 images and the raster image boundaries are having zigzag issues. The boundary of the image is not straight. I have attached the sample file as well. Could you please help me out to get the smooth boundary images?

3011
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Can I purchase a custom polygon from PlanetScope?

Hello! I’m looking to purchase images through PlanetScope, and the minimum order area is 1 hectare. Can I order one hectare in the shape of a custom polygon that I specify, or does the requested image have to be square in shape?

52
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Server response: Invalid request' (400 Client Error)'

Hello, iI’m using WMS request in order to download images from specific bbox. the script runs on different shapefiles from table, create bbox for them and then supose to download the images to a folder. The script is able to run on some of the bboxes but there is one it fails to download images with the following error: with HTTPError: 400 Client Error: Bad Request for url: https://services.sentinel-hub.com/ogc/wms/e034c959-4b7b-4562-MASKED?SERVICE=wms&WARNINGS=False&MAXCC=100.0&BBOX=43.2967163924%2C24.75831009329897%2C43.57486571060041%2C25.0479801973&FORMAT=image%2Ftiff&CRS=EPSG%3A4326&TIME=2020-05-03T07%3A28%3A19Z%2F2020-05-03T11%3A28%3A19Z&WIDTH=2422&HEIGHT=3030&LAYERS=NDVI_MASK_CLOUD&REQUEST=GetMap&VERSION=1.3.0 Server response: “Invalid request” The bbox size is less than 5000X5000 : bbox_size[0] >>> 2422 bbox_size[1] >>>3030 Is there any way to understand what is the source of the error? From th elink I can only u

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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Can't get correct CLM and CLP mean values through Statistical Info Service

Hi to all, I am trying to follow this guide: https://www.sentinel-hub.com/faq/best-way-do-cloud-filtering-specific-aoi/ in order to get statistics for Cloud Coverage for specific AOIs with no luck. I can’t find the CLM and CLP bands as a product in the configuration layer. Thus I am using the “s2cloudless pseudoprobabilities” product. Also, the statistical info service is giving me NaN values. Maybe because I am using the wrong product? Could anyone advise me on this? Thank you in advance.

296
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7 months ago
S
SentinelHub User
posted in Sentinel Hub
Estimated delay time in providing L2A data on AWS-S3

Hi, I’m need to how much delay is being added on average in processing of L1C data and to final L2A data available in S3 bucket (which will be available starting this july 2018).Also, I’ve estimated an average delay of 12-48 hours in processing of L1C data after it is captured.Thanks

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7 months ago
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