The smaller the page length, the smaller and more distorted the ideogram map will be.
British Dictionary definitions for ideogram
ideogram
/ˈɪdɪəʊˌɡræm/
noun
1.
a sign or symbol, used in such writing systems as those of China or Japan, that directly represents a concept, idea, or thing rather than a word or set of words for it
2.
any graphic sign or symbol, such as %, @, &, etc
Word Origin and History for ideogram
n.
1838, from comb. form of Greek idea (see idea) + -gram.