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Correction to: Development of a Web GIS for small-scale detection and analysis of COVID-19 (SARS-CoV-2) cases based on volunteered geographic information for the city of Cologne, Germany, in July/August 2020

The Original Article was published on 28 August 2021

Correction to: Int J Health Geogr (2021) 20:40 https://doi.org/10.1186/s12942-021-00290-0

In this article [1], the wrong figures appeared as Listings 1 to 4; the Listings 1, 2, 3 and 4 should have been appeared as shown.

The in-text reference citations has been arranged in numerical ascending order and the corresponding list has been arranged accordingly.

Listing 1
figure1

Function to determine the location of a house perimeter in an urban area

Listing 2
figure2

Function to generate random ID in Postgres

Listing 3
figure3

Decryption of the random ID and assignment of the original ID to identify the edited house perimeters of a user

Listing 4
figure4

Code snippet for the SQL query in Node via a REST interface

Reference

  1. 1.

    Schmidt F, Dröge-Rothaar A, Rienow A. Development of a Web GIS for small-scale detection and analysis of COVID-19 (SARS-CoV-2) cases based on volunteered geographic information for the city of Cologne, Germany, in July/August 2020. Int J Health Geogr. 2021;20:40. https://doi.org/10.1186/s12942-021-00290-0.

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Correspondence to Andreas Rienow.

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Schmidt, F., Dröge-Rothaar, A. & Rienow, A. Correction to: Development of a Web GIS for small-scale detection and analysis of COVID-19 (SARS-CoV-2) cases based on volunteered geographic information for the city of Cologne, Germany, in July/August 2020. Int J Health Geogr 20, 43 (2021). https://doi.org/10.1186/s12942-021-00295-9

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