Benjamin Nowak
@bjnnowak.bsky.social
French lecturer in agronomy with teaching and research activities focused on soil sciences and remote sensing for crop monitoring.
Author of "Memo Visuel d'Agronomie", a book of agricultural data visualization.
Author of "Memo Visuel d'Agronomie", a book of agricultural data visualization.
La bataille de Trafalgar a conduit à l’essor de la #betterave sucrière, les #carottes sont devenues oranges à cause de la ville du même nom, le carême orthodoxe a drastiquement modifié le #tournesol… Autant d’exemples développés dans mon livre “Pourquoi les bananes n’ont-elles pas de pépins?”
May 12, 2025 at 12:05 PM
La bataille de Trafalgar a conduit à l’essor de la #betterave sucrière, les #carottes sont devenues oranges à cause de la ville du même nom, le carême orthodoxe a drastiquement modifié le #tournesol… Autant d’exemples développés dans mon livre “Pourquoi les bananes n’ont-elles pas de pépins?”
A Journey Through France : a scrollytelling story about exposure of the French population to pesticides, with a focus on exposure of schoolchildren
bjnnowak.quarto.pub/journey_to_f...
bjnnowak.quarto.pub/journey_to_f...
December 18, 2024 at 2:15 PM
A Journey Through France : a scrollytelling story about exposure of the French population to pesticides, with a focus on exposure of schoolchildren
bjnnowak.quarto.pub/journey_to_f...
bjnnowak.quarto.pub/journey_to_f...
One year timelapse for the guitar-shaped forest
We see the fields evolving between bare earth, vegetation and bare earth again while the forest remains green [...]
We see the fields evolving between bare earth, vegetation and bare earth again while the forest remains green [...]
December 16, 2024 at 3:26 PM
One year timelapse for the guitar-shaped forest
We see the fields evolving between bare earth, vegetation and bare earth again while the forest remains green [...]
We see the fields evolving between bare earth, vegetation and bare earth again while the forest remains green [...]
To learn Closeread extension (for scrollytelling with Quarto and #RStats), I've built a small interactive application that highlights some insolite places that can be located using satellite images
Give it a try !
bjnnowak.quarto.pub/mysteries-of...
Give it a try !
bjnnowak.quarto.pub/mysteries-of...
December 13, 2024 at 10:34 AM
To learn Closeread extension (for scrollytelling with Quarto and #RStats), I've built a small interactive application that highlights some insolite places that can be located using satellite images
Give it a try !
bjnnowak.quarto.pub/mysteries-of...
Give it a try !
bjnnowak.quarto.pub/mysteries-of...
Some examples of graphs from the book that can be reproduced with the #RStats tutorials of the site:
bjnnowak.github.io/memo_agro/
(Including one plot made with #TidyTuesday data! Can you guess which ?)
bjnnowak.github.io/memo_agro/
(Including one plot made with #TidyTuesday data! Can you guess which ?)
December 5, 2024 at 12:40 PM
Some examples of graphs from the book that can be reproduced with the #RStats tutorials of the site:
bjnnowak.github.io/memo_agro/
(Including one plot made with #TidyTuesday data! Can you guess which ?)
bjnnowak.github.io/memo_agro/
(Including one plot made with #TidyTuesday data! Can you guess which ?)
I've cleaned up my script a bit, here's an example of how to reproduce this kind of bivariate choropleth map with a suppressive palette with #RStats :
github.com/BjnNowak/Tid...
github.com/BjnNowak/Tid...
December 5, 2024 at 6:21 AM
I've cleaned up my script a bit, here's an example of how to reproduce this kind of bivariate choropleth map with a suppressive palette with #RStats :
github.com/BjnNowak/Tid...
github.com/BjnNowak/Tid...
1 628 schools are exposed to more than 10 pesticides applications per year in France
December 4, 2024 at 12:13 PM
1 628 schools are exposed to more than 10 pesticides applications per year in France
This is explained by schools distribution: primary school are scattered all over the territory whereas high schools are concentrated in major cities.
Exposure is particularly high for primary schools, a combination of kindergartens and elementary schools that are more typical of rural areas [...]
Exposure is particularly high for primary schools, a combination of kindergartens and elementary schools that are more typical of rural areas [...]
December 3, 2024 at 10:38 AM
This is explained by schools distribution: primary school are scattered all over the territory whereas high schools are concentrated in major cities.
Exposure is particularly high for primary schools, a combination of kindergartens and elementary schools that are more typical of rural areas [...]
Exposure is particularly high for primary schools, a combination of kindergartens and elementary schools that are more typical of rural areas [...]
New #dataviz : Exposure to pesticide applications in French schools.
Schools for younger children (kindergartens to elementary schools) are more affected than schools for older children (middle or high school) [...]
Schools for younger children (kindergartens to elementary schools) are more affected than schools for older children (middle or high school) [...]
December 3, 2024 at 10:38 AM
New #dataviz : Exposure to pesticide applications in French schools.
Schools for younger children (kindergartens to elementary schools) are more affected than schools for older children (middle or high school) [...]
Schools for younger children (kindergartens to elementary schools) are more affected than schools for older children (middle or high school) [...]
🆕There is two new #RStats tutorials on the website I've created to show how to reproduce some of the #dataviz of my book, "Mémo visuel d'agronomie" :
bjnnowak.github.io/memo_agro/
All data online, just follow the code!
bjnnowak.github.io/memo_agro/
All data online, just follow the code!
December 2, 2024 at 11:43 AM
🆕There is two new #RStats tutorials on the website I've created to show how to reproduce some of the #dataviz of my book, "Mémo visuel d'agronomie" :
bjnnowak.github.io/memo_agro/
All data online, just follow the code!
bjnnowak.github.io/memo_agro/
All data online, just follow the code!
This is (almost) the case in the first map
(only an adaptation of the original Bertin's map, as he used points as patterns for each department)
(only an adaptation of the original Bertin's map, as he used points as patterns for each department)
December 2, 2024 at 9:27 AM
This is (almost) the case in the first map
(only an adaptation of the original Bertin's map, as he used points as patterns for each department)
(only an adaptation of the original Bertin's map, as he used points as patterns for each department)
How do **you** map the density of population ?
December 2, 2024 at 5:47 AM
How do **you** map the density of population ?
Finally, as I had a different number of observations in each entity, I used points on centroids of different sizes.
This makes it easier to identify areas with consistently high incidence vs. consistently low incidence.
This makes it easier to identify areas with consistently high incidence vs. consistently low incidence.
December 1, 2024 at 5:41 PM
Finally, as I had a different number of observations in each entity, I used points on centroids of different sizes.
This makes it easier to identify areas with consistently high incidence vs. consistently low incidence.
This makes it easier to identify areas with consistently high incidence vs. consistently low incidence.
The principle is that entities with high uncertainty are colored the same (whether they have high or low values).
Polar coordinates are generally used to illustrate the decrease in the number of classes as uncertainty increases (right plot) [...]
Polar coordinates are generally used to illustrate the decrease in the number of classes as uncertainty increases (right plot) [...]
December 1, 2024 at 5:41 PM
The principle is that entities with high uncertainty are colored the same (whether they have high or low values).
Polar coordinates are generally used to illustrate the decrease in the number of classes as uncertainty increases (right plot) [...]
Polar coordinates are generally used to illustrate the decrease in the number of classes as uncertainty increases (right plot) [...]
My first instinct was to do this with a bivariate choropleth, but I found that the “classic” palettes (like this one below) were not very intuitive. [...]
December 1, 2024 at 5:41 PM
My first instinct was to do this with a bivariate choropleth, but I found that the “classic” palettes (like this one below) were not very intuitive. [...]
The map shows the incidence of a cereal disease in France for the period 2010 to 2019, which I made for a scientific article we'll be submitting shortly.
After seeing the first version below, a co-author asked me if it was possible to add inter-annual variability. [...]
After seeing the first version below, a co-author asked me if it was possible to add inter-annual variability. [...]
December 1, 2024 at 5:41 PM
The map shows the incidence of a cereal disease in France for the period 2010 to 2019, which I made for a scientific article we'll be submitting shortly.
After seeing the first version below, a co-author asked me if it was possible to add inter-annual variability. [...]
After seeing the first version below, a co-author asked me if it was possible to add inter-annual variability. [...]
Some time ago, I created an #RStats pckg to reproduce J. Bertin's valued point maps
Today, here's an application of this package, replacing the dots with silhouettes from @albertocairo.bsky.social 's WeePeople font.
Today, here's an application of this package, replacing the dots with silhouettes from @albertocairo.bsky.social 's WeePeople font.
November 27, 2024 at 9:58 AM
Some time ago, I created an #RStats pckg to reproduce J. Bertin's valued point maps
Today, here's an application of this package, replacing the dots with silhouettes from @albertocairo.bsky.social 's WeePeople font.
Today, here's an application of this package, replacing the dots with silhouettes from @albertocairo.bsky.social 's WeePeople font.
🔗 Link to preprint:
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
November 27, 2024 at 6:17 AM
🔗 Link to preprint:
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Maps of pesticide use may be consulted online :
bjnnowak.quarto.pub/exposition_p...
Rasters of pesticides use may also be downloaded for use in future studies (impact of pesticides on human health, evolution of animal populations, etc.) :
zenodo.org/records/1420...
bjnnowak.quarto.pub/exposition_p...
Rasters of pesticides use may also be downloaded for use in future studies (impact of pesticides on human health, evolution of animal populations, etc.) :
zenodo.org/records/1420...
November 27, 2024 at 6:03 AM
Maps of pesticide use may be consulted online :
bjnnowak.quarto.pub/exposition_p...
Rasters of pesticides use may also be downloaded for use in future studies (impact of pesticides on human health, evolution of animal populations, etc.) :
zenodo.org/records/1420...
bjnnowak.quarto.pub/exposition_p...
Rasters of pesticides use may also be downloaded for use in future studies (impact of pesticides on human health, evolution of animal populations, etc.) :
zenodo.org/records/1420...
This increase in precision has enabled us to combine the map of pesticide use with the map of population density, differentiating, for example, between houses near fields and houses in town centers in the same municipality […]
November 27, 2024 at 6:03 AM
This increase in precision has enabled us to combine the map of pesticide use with the map of population density, differentiating, for example, between houses near fields and houses in town centers in the same municipality […]
With this method, we were able to improve the spatial accuracy compared with the previous Adonis map, which averaged pesticide treatments by municipality, using the same data sources as our study […]
November 27, 2024 at 6:03 AM
With this method, we were able to improve the spatial accuracy compared with the previous Adonis map, which averaged pesticide treatments by municipality, using the same data sources as our study […]
To do this, we took into account the impact of each plot, assigning an average value to the number of treatments per crop and per region (data treatment with #GEE)
The result of this step is a raster of pesticide use intensity with 100m resolution […]
The result of this step is a raster of pesticide use intensity with 100m resolution […]
November 27, 2024 at 6:03 AM
To do this, we took into account the impact of each plot, assigning an average value to the number of treatments per crop and per region (data treatment with #GEE)
The result of this step is a raster of pesticide use intensity with 100m resolution […]
The result of this step is a raster of pesticide use intensity with 100m resolution […]
🚨New preprint: Assessment of population exposure to pesticide applications in mainland France
🚜Using a high resolution map of pesticide use intensity, we estimated that 25% of the population was exposed to at least one pesticide application per year, with high spatial variability […]
🚜Using a high resolution map of pesticide use intensity, we estimated that 25% of the population was exposed to at least one pesticide application per year, with high spatial variability […]
November 27, 2024 at 6:03 AM
🚨New preprint: Assessment of population exposure to pesticide applications in mainland France
🚜Using a high resolution map of pesticide use intensity, we estimated that 25% of the population was exposed to at least one pesticide application per year, with high spatial variability […]
🚜Using a high resolution map of pesticide use intensity, we estimated that 25% of the population was exposed to at least one pesticide application per year, with high spatial variability […]