Category: Geographic Information Systems

Create a column ‘geometry’ of points with longitude and latitude data given in a pandas DataFrame

How do you plot latitude and longitude for pandas? 1>Import comma-separated text files using pandas into the dataframe. 2>Adding columns address and coordinates in dataframe. 3>Adding column latitude and longitude from the coordinates column. 4>plotting all coordinates of tiger reserves from the dataframe into the map by using for loop.  How to plot longitude and

Error when using r.watershed in QGIS 2.10.1 with Grass

What is the difference between Qgis and Qgis with grass? GRASS has full/real topology support, that means that a single boundary can share several areas . QGIS is primarily non-topological or “spaghetti” , adjacent area boundaries are duplicated. And they relate in the way that Qgis can display and edit GRASS vectors through the GRASS

Importing colour map from .text file which will then correspond to geologic shapefile on QGIS 3.10.6

How do I import a map into QGIS? Go to Layout-> Add a Map. Once the Add map button is active, hold the left mouse and drag a rectangle where you want to insert the map. You will see that the rectangle window will be rendered with the map from the main QGIS canvas. You

How to determine Visibility Map for Atmospheric Correction

What is the formula for atmospheric correction? Atmospheric correction consists of retrieving of Lw(λ) from the sum La (λ) + t(λ)Lw (λ) = Lt − Lr, as assumed by (1). Which atmospheric correction method is most useful for easy detection of haze from the images and why? Answer: Spatial “information based correction”: “spatial matching of

Adding dynamic text to layout from attribute table with Data Driven Pages

How do I add dynamic text in Arcgis? Add dynamic text to your layout With a layout view active, on the Insert tab, in the Graphics and Text group, click the Dynamic Text button . Choose a dynamic text tag from the gallery. In the layout view, click and drag a box in the desired

QGIS Draw Polygon Exact Dimension

How do I create a polygon with specific dimensions in QGIS? Select Advanced Digitizing Panel by right-click anywhere on the tools menu bar to enable the panel: Click on Add Polygon to create a new one. Add one vertex on the canvas to activate the Advanced Digitizing Panel to enter the dimensions:   How do

Script to be able to edit a shapefile to the same borders of another shapefile?

How do you duplicate a shapefile? Note: Click the Edit tool. on the Editor toolbar. Click the feature you want to copy. Hold down SHIFT while clicking features to select additional features. Click the Copy button. on the Standard toolbar. Click the Paste button. on the Standard toolbar. Click the layer in which to store

Standardize Address tool

What is address standardization? Address standardization (or address normalization) is the process of checking the format of addresses against an authoritative database – such as USPS in the US – and converting address information into acceptable, standardized format. How do you standardize an address? To standardize without a database: Get the address that you wish

How to merge two shapefiles with partial difference in QGIS?

How do I combine two shapefiles with different attributes? Process Click on the Vector menu, Data Management tools, Merge Shapefiles to One Ensure the correct shapefile type is selected (points, lines, or polygons). Select the folder where the two (or more) shapefiles you want to merge are located using the Browse button.   How do

Randomly assigning new XY locations

How to generate random points ArcGIS Pro? Quote from video: I am writing here random points also here you have to select your start area shape file. In this place number of points you can choose as many points as you want like here i am choosing 150. How do you generate random points in

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