Ramba uchinyora ndima iyi - Mienzaniso inokosha yokutanga ine mativi maviri inosanganisira mepu yokuyerera kweNapoleon's March paMoscow yakabudiswa naCharles Joseph Minard muna 1869; "coxcombs" yakashandiswa naFlorence Nightingale muna 1857 sechikamu chemushandirapamwe wokuvandudza mamiriro ehutsanana muuto reBritain; uye mepu yemadontho yakashandiswa naJohn Snow muna 1855 kuti afungidzire kupararira kwekorera muBroad Street
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