REDUCE allows you to iterate through your data, building your result step-by-step, in the same way a loop operates in a ...

This feature works best when the columns you want to visualize are adjacent to each other, so you may need to rearrange your ...

For the first half of the twentieth century, Sudan was a joint protectorate of Egypt and the United Kingdom, known as the Anglo-Egyptian Condominium. Egypt and the United Kingdom signed a treaty ...