I need to manage a lot of project and I used to collect them under a topic wich is an Item of an activity report.
I thought that I could calculate a rate for the different states of the projects : for example I have 65 projects to manage and 10 % are finished, 25 % on run, and 65 % not started . For Each State I have a chid Topic in wich I drag an drop the project that could be a link to another map. I'm sorry for my english which is very bad.
One option which won't give you exactly what you want but might still be useful would be to create and add a new icon group in the Map Index and within this group create a unique icon for each branch which you then apply to the child topics in that branch. The Map Index will then show the count of each unique icon and therefore the count of child topics in each branch.
If you want a count only of topics which are for example 25% complete across all branches you can then apply a power filter to the map to show only the topics which match this across all branches; the count next to each of the branch icons in the Map Index will automatically adjust to count only the topics which are 25% complete within that branch.
If for any reason you want to show the number of topics which are 25% complete only within one branch you can apply the power filter to show only those topics with the appropriate branch icon and which also have a 25% complete icon. Again the count next to this branch icon in the Map Index should change to show the appropriate number of topics which meet these criteria.
I agree though that a facility to show within a parent topic at least the total count of child topics would be helpful. Ideally it would great if you could choose between counting either the total of all the child topics or just the count of child topics at the next level, and if the total shown in the parent was adjusted when the map was filtered to count only the visible child topics.
you can get the desired result, just by using the Numbering Feature that you can find under the Insert Tab.
As you can see from the example you can read the number of subtopics.
You can set the depth to 5 levels.
Hope that is sufficient