I've used the Document Map widget in Orange to identify all countries mentioned in the corpus. There appears to be a bug in the document map: On the map itself some countries are not colored (high lighted) to indicate the number of documents linked to a country. For example South Africa is not highlighted at all, thus it shows that zero mention is made within my corpus about South Africa. However if I click on the country one can clearly see in the output that there are a number of references to that country. Also Corpus Viewer then provides a list of the documents related to that country. Is there somehow a way to get the map to color all the countries referenced in the corpus? Or is this a bug?