Posted on February 15, 2023 (Updated on July 10, 2025)
100% accuracy during validation
Hiking & ActivitiesCan validation accuracy be 100%? The answer is “NO”. A high accuracy measured on the training set is the result of Overfitting. So, what does this overfitting means? Overfitting occurs when our machine learning model tries to cover all the data points or more than the required data points present in the given dataset. Why
Posted on February 15, 2023 (Updated on July 10, 2025)
Converting GCS NAD 1983 to CA state plane
Hiking & ActivitiesWhat zone is NAD83 California? In NAD 83, Los Angeles County is consolidated into Zone 5. How many SPCS zones are in California based on NAD 83 SPCS 83 )? 6 zones The California SPCS has 6 zones in NAD83 and 7 zones in NAD27, with Los Angeles County as the unique Zone 7 in
Posted on February 15, 2023 (Updated on July 10, 2025)
Finding identical polygons based on some attribute and then calculating field based on other attributes using ArcGIS Pro
Hiking & ActivitiesHow do you calculate geometry attributes in ArcGIS pro? Access the Calculate Geometry Attributes tool by opening the attribute table and right-clicking the field to bring up the context menu. There is an option to ‘Calculate Geometry’. This tool can also be accessed directly from the geoprocessing pane from within the Data Management toolbox. How
Posted on February 15, 2023 (Updated on July 10, 2025)
Extracting tree cover values from Hansen to feature collection using Google Earth Engine?
Hiking & ActivitiesHow do I get NDVI data from Google Earth Engine? Calculate NDVI from Recent Sentinel Satellite Imagery in Google Earth Engine Summary. Get started in Earth Engine (new users) Import Sentinel-2 Imagery within your study area. Calculate NDVI from the Sentinel-2 imagery. Select the Most Recent Image. Add the Most Recent NDVI Image to the
Posted on February 15, 2023 (Updated on July 10, 2025)
Atmospheric correction using ENVI Flaash
Hiking & ActivitiesWhat is Flaash atmospheric correction? FLAASH is a first-principles atmospheric correction tool that corrects wavelengths in the visible through near-infrared and shortwave infrared regions, up to 3 µm. (For thermal regions, use the Toolbox option Radiometric Correction > Thermal Atmospheric Correction.) What are the methods for atmospheric correction? Dark object subtraction, radiative transfer models, and
Posted on February 15, 2023 (Updated on July 10, 2025)
Mapping and update data in database
Hiking & ActivitiesWhat is data mapping in database? Data mapping is the process of connecting a data field from one source to a data field in another source. This reduces the potential for errors, helps standardize your data and makes it easier to understand your data. What is ETL data mapping? What is ETL mapping? ETL mapping