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PlanetScope

PlanetScope Monitoring provides a medium-resolution, continuous, and complete view of the world from above, every day.

69 Topics
195 Replies

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69 Topics

Bjaratjal‎‎ 🌱

GEE APP failed to load ee.ImageCollection('projects/planet-nicfi/assets/basemaps/asia'

Hi Sir,I am facing one issue with GEE App . i am able to run the code in GEE editor and able to load the planet data but as i publish the GEE app it is not showing me the planet data . kindly help me to resolve this . ee.ImageCollection('projects/planet-nicfi/assets/basemaps/asia'

861

4 months ago

kgis‎‎ 🌱

asked in PlanetScope

Steps to take to extend my account further

I wanted to reach out regarding my account, which is currently set to remain active until September 30, 2024. Could you please let me know the steps I need to take to extend my account further?I appreciate your assistance and look forward to your guidance.

661

4 months ago

Hemalatha_V‎‎ 🌱

asked in PlanetScope

How to apply "clear_percent" filter after clipping the image?

I am downloading clipped ortho_analytic_sr image and its udm for the list of geojson geometries. I need to apply several filters (date, clear_percent, and asset) before downloading. I also need to clip the images to reduce my storage cost. However, I cannot find a way to clip the image first and apply the clear_percent filter without downloading the whole image first.By filtering first and clipping results, since my geometry is very small, I am getting clipped images with noise despite selecting a high clear_percent.I need in clipping the image first and select the clipped image with high clear_percent value. Thanks in advance!This is the code I am using,sfilter = data_filter.and_filter([ data_filter.permission_filter(), data_filter.date_range_filter('acquired', gte=start_date, lte=end_date), data_filter.geometry_filter(geojson_geometry), data_filter.asset_filter('ortho_analytic_8b_sr'), data_filter.range_filter('clear_percent', gte=80) ]) ids

Astna‎‎ 🌱

Hello!I am new here,Do we need to apply any corrections to BGR NIR images obtained from analytic radiance (TOAR) 4-band images to estimate spectral indices like NDVI and NDWI, especially when comparing them with Landsat 8 spectral images?

2151

5 months ago

matt.ballardPlaneteer 🌎

posted in PlanetScope

New Custom Scripts for PlanetScope: NDCI, NDRE, and Cloudless Mosaic

When you deliver Planet data to Sentinel Hub, you can use the Processing, Statistical, and OGC APIs to visualize and analyze data. To use these APIs, you need to provide an evalscript, or custom script, which defines how the satellite data should be processed. With the evalscripts, you can perform multi-temporal analysis, data fusion, apply custom symbology, band math, and much more on your Planet data.To help you get started, you can find example custom scripts in our Custom Scripts Repository. We’ve just added three new custom scripts for PlanetScope for Normalized Difference Chlorophyll Index (NDCI), Normalized Difference Red Edge Index (NDRE), and a cloudless mosaic.What custom scripts would you like to see added to Planet Insights Platform? Drop a comment or post on the Ideas forum!Note: to use these scripts, you need to first order your Planet data to Sentinel Hub, learn more here: Normalized Difference Chlorophyll Index (NDCI)An index for PlanetScope that uses the Red Edge an

950

5 months ago

ahashem‎‎ 🌱

asked in PlanetScope

Separate Planet 8 band surface Reflactance Raster composite using QGIS

Hello, I need to separate the Planet 8 band surface reflectance composite into separate bands using QGIS 3.36. Any advice will be highly appreciated. Thanks in advance.Ahmed

2862

6 months ago

Minh Nguyen‎‎ 🌱

posted in PlanetScope

Generate DSM/DEM from multiple PlanetScope images

Hello,I am study the topography change of mining site in Vietnam and wonder is there anyone experienced the DSM/DEM generation from multiple PlanetScope images? And comparison between stereo and multiple-images result for DEM/DSM. Although there are several scientific papers, there is lack of guideline to retrieve the high accuracy of DEM/DSM. Thank you.

114510

8 months ago

barand‎‎ 🌱

posted in PlanetScope

Urban indices for planetscope

Hello, I was wondering if anyone knows any good indices to use in urban landscape for picking out buildingactivity and not vegetation?

1670

9 months ago

safalabolo‎‎ 🌱

asked in PlanetScope

Change of spatial resampling

Hi folks!From the available documentationhttps://assets.planet.com/docs/Planet_PSScene_Imagery_Product_Spec_letter_screen.pdfI understand that the PlanetScope data is distributed with a CubicConvolution type resampling.I was wondering if a different choice, nearest neighbor resampling, was possible in order to preserve the original value of the image pixels.Thank

2322

9 months ago

Codrut-Andrei Diaconu‎‎ 🌱

asked in PlanetScope

Cloud masking with UDM for snow & ice regions

Hi! Has anyone insights into the quality of the UDM mask (clouds especially) for snow-covered regions?Below you can see an image (2017-08-01, 45.97N, 7.35E) with some glaciers & snow and the corresponding cloud mask from the UDM layer.You can notice: a lot of snow/ice areas are miss-classified as clouds there is a line that separates the cloud mask into two sub-regions (the data comes from two different stripes); what's strange is that one sub-region has many more FPs than the other; looks like the algorithm behind is very sensitive to the underlying sensorI’m wondering if it is common that snow & ice are frequently classified as clouds. I’m more familiar with the Sentinel-2 data and there the masks usually manage to capture the difference between snow and clouds.Has anyone experience in this area?Thanks!

zzoligaszz‎‎ 🌱

Hi, I am new to Planet and am currently going through the tutorials, etc., but I have a quick question on data. I downloaded some imagery yesterday, but it wasn't quite what I was looking for. It came clipped and also complete as an RGB image. I was hoping for something more like you would get in Earth Explorer with a Tile covering the area and individual bands of imagery so I can do ratios and data fusion. Is this possible with Planet imagery? Thanks for any assistance or advice.

2081

9 months ago

rmant‎‎ 🌱

asked in PlanetScope

Smoothing PlanetScope Raw Data to Eliminate Unusual Lines/Stripes

Hi, I'm currently working on estimating chlorophyll-a (chl-a) concentrations in large water bodies using PlanetScope raw data, enhanced with acolite atmospheric correction. However, I've encountered a consistent issue where some scenes exhibit unusual lines or stripes, which I suspect to be noise. This has happened across multiple data sets and seems to disrupt the accuracy of my chl-a concentration readings. Upon reviewing the PlanetScope data documentation (https://developers.planet.com/docs/apis/data/sensors/#the-psbsd-instrument), I understand that each frame consists of eight stripes. I believe these are causing the discrepancies in chl-a concentrations, as values significantly differ from one side of a stripe to the other. This variance is impacting the trustworthiness of my output. Here's an image for reference

4066

10 months ago

amullen01‎‎ 🌱

asked in PlanetScope

PlanetScope Ortho Tiles and CSDA license

Hello,Recently I have started using Planet Imagery through a CSDA license for the first time in about a year. Last year we were using PlanetScope Ortho Tiles through the same license. Upon recently browsing Planet Explorer I do not see an option for PlanetScope Ortho Tiles anymore. Are these still available to CSDA users? If so how can we go about accessing them? Thanks,Andrew

1532

11 months ago

ElishaNjomaba‎‎ 🌱

asked in PlanetScope

Cloud and Shadow Masking with UDM

Dear Community,I would like to find out how to deal with cloud masking using the UDM2 data from the PlanetScope.I already acquired an image that is cloud-free (from metadata cloud is 0.16). Do I need to do any cloud processing or masking? since this cloud percentage is basically insignificant.Again, I used a shape-file to acquire the image of my location since I want the image to span a period of data range; how do I go about the image mosaicing process?Thank you for the help

2592

11 months ago

Thomas Howard‎‎ 🌱

posted in PlanetScope

Atmospheric Correction

Hi everyone, I am trying to decide whether I should perform my own atmospheric corrections to develop SuperDove surface reflectance products (especially over waterbodies).What best practices do you have for atmospheric correction over terrestrial and aquatic environments? Are there any workflows/code repositories that you have found helpful? As MODIS is decommissioned, what options exist to replace the water vapor and ozone inputs currently used in the process for generating surface reflectance products? What level of success have people had using these other inputs?

1330

1 year ago

Swapna Mahanand‎‎ 🌱

asked in PlanetScope

Understanding band composition in Planet scope data.

HiI have downloaded the data for my study sites. It comprises 6 scenes.For one month i downloaded the composite image but it seems like the different scene has different stretching effect.So i downloaded the individual scenes separately to mosaic.I tried to mosaic each band of the scene using ArcGIS, mosaic to new raster tool.But i am mosaicking a single band but the output is becoming an RGB image.Can anyone help me out of this confusion. I have attached the image of mosaicking of band-4 from each scene but the output is an RGB image. This is for your kind reference.

2232

1 year ago

tmyeoman

posted in PlanetScope

Co-registration of PlanetScope Imagery

Hello folks. I’m wondering what approach everyone is using to co-register PlanetScope images for time-series analysis over large areas (beyond a single scene)? My delivery was to Google Earth Engine.

10019

1 year ago

Michael Ogungbuyi‎‎ 🌱

asked in PlanetScope

Planetscope harmonized bands with Sentinel-2

Hi Community, I used to think the Red-edge band alongside Red, Green, Blue and Near-Infrared bands of Planet are harmonized with Sentinel-2. However, the FAQ available through New-Generation PlanetScope FAQs suggests that Red-edge is excluded. Please could someone provide some information about this?Since the harmonized band is only from, I think January of 2022. I aim to use Sentinel-2 bands (red, blue, green and NIR) as a proxy for PlanetScope bands to enable me to go back to 2018 through 2022, and then interpolate the actual PlanetScope bands from 2022 to date for a time series analysis. My second query is to ask if an existing published article exists on this.Thank you Best regards Michael

3595

1 year ago

Haiyan Huang‎‎ 🌱

asked in PlanetScope

the difference between _3B_AnalyticMS_SR_8b.tif and _3B_AnalyticMS_SR.tif

Hi, I am trying to use the surface reflectance product of psb.SD instruments.I found there are two versions of the SR products: 8 bands: _3B_AnalyticMS_SR_8b.tif 4 bands:_3B_AnalyticMS_SR.tif I assume the RGB and Nir bands from the two files are the same (assume they are exactly the same in SR values). 8-band product has 4 more extra bands. best,Haiyan

1991

1 year ago

Haiyan Huang‎‎ 🌱

asked in PlanetScope

black lines in SR file

Hi,I found some black lines (low values ) in the NIR band of 20200224_152346_83_106b_3B_AnalyticMS_SR. Those lines do not appear in RGB bands, so I think they are not natural features.I m not sure how many files have the similar issue. Would you please check as NIR band is very important to our research. best,Haiyan

2271

1 year ago

Haiyan Huang‎‎ 🌱

asked in PlanetScope

8b SR images have black strips

Hi,I’ve downloaded some 8b sr images, but I found they have some black strips across the image. (see below, band 4 of 20230214_080952_42_2447_3B_AnalyticMS_SR_8bmore obviously in shortwave bands. would you please check?Best,Haiyan

2041

1 year ago

Gabrielle Ruso‎‎ 🌱

asked in PlanetScope

Beginner Help: Converting to Surface Temperature

Hi all, I am a PhD student hoping to use Planet data in one of my projects. While I have used ArcGIS in the past, I have not worked with satellite-based data before, so a lot of the terminology and data are new to me. Given that, please forgive me for what is likely a very basic set of questions. I am interested in determining the surface temperature of various lakes over time. Currently, it is my understanding that I should be able to download surface reflectance images and then convert these to surface temperature. I have found a tutorial on how to do that with Landsat imagery, but I am working with small alpine lakes, and would, thus, like to work with the imagery that Planet has to offer for improved resolution and temporal replication. At this stage, I find that I am struggling a bit with even knowing what to ‘google’ for help, so any advice or pointers in the right direction would be greatly appreciated. How should I decide which satellites to use (e.g., Dove R, Super Dove,

Javier Muro‎‎ 🌱

Hi. I’ve noticed that in some images (3/3 so far), the udm layer has some shifts across scenes for one same tile/overpass. This complicates the application of cloud masks. Is is something you are aware of? or is it rare and I was just unlucky? 5626519_3264221_2022-05-09_241c_udm25625958_3263610_2022-05-08_241c_udm25626519_3264220_2022-05-09_241c_udm2

1671

1 year ago

Leikun Yin‎‎ 🌱

asked in PlanetScope

Only three bands valid for Planet Basemaps "global_monthly_yyyy_mm_mosaic"

Hi,I have a problem with the NIR band when I used the product "global_monthly_yyyy_mm_mosaic". It seems like it has four bands (RGB+NIR) band but the NIR contains only the value 255. I am not sure this is a technical issue or this product only has three bands available.Thanks for your help!

1081

1 year ago

Léo Rasse‎‎ 🌱

asked in PlanetScope

Non consistent surface reflectance values

Hello everyone, I am using PlanetScope Scene images already corrected in surface reflectance (Dove Classic) to assess the temporal changes of the vegetation cover on a specific site. As the site is about 30 km long, I need to use several tiles to cover the whole area. I have recently noticed that the reflectance values of the pixels of two overlapping images are quite different (even if the images were taken by the same satelitte, at the same time).Do somebody know why do I oberve this ? If yes, do somebody know how can I solve and obtain consistant surface reflectance values between overlapping tiles ? I thank you in advance for your answers, Léo

2276

1 year ago

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