What is an API?

Figure 1

Structure of what is happening behind the scenes when we request a webpage
Structure of what is happening behind the scenes when we request a webpage

Figure 2

Content of a GET header
Content of a GET header

Figure 3

Contents of a POST header
Contents of a POST header

GETting data

Using POST

Figure 1

“functions or endpoints at the API{Screenshot of endpoints at Statistics Denmark API}

What about danstat?

A short note on timeA relatively short session on time.

ggplot2

Figure 1

What we might note that the fact that we have ALL the municipalites leads to a LOT of points.

Figure 2

A lot better.

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Let us be frank - a boxplot of these aggregated data is not really that useful. Boxplots are however so useful, that it is relevant to show how they are made.

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Jitter is a special way of plotting points. When we plot the points at their exact location, we risk that some of the points overlap. geom_jitter adds a small bit of noise to the data, in order to spread them out. That way we can better see individual points.

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Now we get the values from INDHOLD plotted on the y-axis. But we get ALL the values from INDHOLD plotted. And we have INDHOLD from several years, from several administrative parts of Denmark.

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Now we get more sensible numbers. But each bar is still the sum of the number of divorced persons in ALL the regions.

Figure 11

Oops! Color only colors the outline of the bars. We can do better.

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Whats next?