# Blog

### Pointing the way with arrows

When creating dashboards, reports, or infographics, you often use other elements besides charts and tables. Individual numerical values are often presented as text (with a suitable style that attracts the readers attention and matches the whole report visually), sometimes with meaningful icons. Suc…

### Visualising decision trees: the classic refurbished

In this post, we continue to discuss the visualisation of nested hierarchical data. In my previous blog, I showed how hierarchical data can be presented in a two-dimensional space as a treemap. This approach, however, has some limitations, namely the number of nesting levels. The treemap can handle…

### Maps that grow out of trees: data visualisation as an artform

In the previous PS blog “Trees that grow out of tables”, Janusz Wachnicki described how a good understanding of the humble crosstab can help us utilise classification trees more effectively. When it comes to visualisation, can classification results be presented any other way than in a tree? The an…

### Series plot

The series plot is a type o linear or layered plot most often used to represent changes in time. The plot may represent size for a primary variable category or statistics for a selected quantitative variable. Individual points of the plot representing data are connected with a line from the first v…

### Building charts with bricks

Data visualisation helps present in an attractive way information that could be difficult to interpret in the form of a table. Undoubtedly, for many managers, the phrase ‘time is money’ is a life motto, not a cliché. They receive a lot of information in tables but often need to quickly verify the p…

### Table or cube? Reporting in the form of olap cubes

When we want to include a lot of values in a table, in several various cross-sections e.g. by time, region, type of phenomenon, we have several approaches to choose from.

### Violin plot

Before starting a more complex data analysis, it is worth taking a closer look at variable distributions which are of interest to us.

### Correspondence analysis: solution quality assessment

Correspondence analysis is a technique often thought of as an alternative to a crosstab (contingency table).

### Basic steps when design tables

Humans presented data in tabular format already in the ancient times. Thus, sometimes we can be deluded that structuring and reading tables is intuitive and does not require expert knowledge

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