José Martí Parreño

Jan 14, 2025 | towardsdatascience.com | José Martí Parreño

Discover the #1 strategy to handle skyscraper bars in your chartsWelcome to the eighth post in my “Plotly with code” series! If you missed the first one, you can check it out in the link below, or browse through my “one post to rule them all” to follow along with the entire series or other topics I have previously written about. A short summary on why I am writing this seriesMy go-to tool for creating visualisations is Plotly.

Jan 5, 2025 | towardsdatascience.com | José Martí Parreño

Is there ever a good reason for starting a bar chart above zero? Welcome to the seventh post in my “Plotly with code” series! If you missed the first one, you can check it out in the link below, or browse through my “one post to rule them all” to follow along with the entire series or other topics I have previously written about. A short summary on why I am writing this seriesMy go-to tool for creating visualisations is Plotly.

Dec 10, 2024 | towardsdatascience.com | José Martí Parreño

And it is not always simply ordering by highest to lowestWelcome to the fifth post in my “Plotly with code” series! If you missed the first one, you can check it out in the link below, or browse through my “one post to rule them all” to follow along with the entire series or other topics I have previously written about. A short summary on why I am writing this seriesMy go-to tool for creating visualisations is Plotly. It’s incredibly intuitive, from layering traces to adding interactivity.

Dec 1, 2024 | towardsdatascience.com | José Martí Parreño

Streamlit-AgGrid is amazing. But there are 2 scenarios where its use is not recommended. Hello there! I assume you are reading this blog post because you are aware of Streamlit and AgGrid. If, by chance, you are not familiar with either or want to dive into the technical details of AgGrid, I wrote a detailed blog post on how to create well-styled dataframes using the Streamlit-AgGrid component created by Pablo Fonseca. In my opinion, st_aggrid is one of the best “extra” components in Streamlit.

Nov 22, 2024 | towardsdatascience.com | José Martí Parreño

Don’t rush into the fancy title until you have read this. Picture this. You have just delivered a killer project, your team’s buzzing, and then — bam! You are asked, ‘Have you ever thought about leading the team?’ Sounds tempting, right? But hold on — do you really know what you’re signing up for? As a data science manager, I have watched my teams grow from 0 to 12 data scientists and helped scale our DS discipline from 20 to 50+. I have also seen fellow managers leave for new challenges.