使用worldmap+geoshow命令繪製中國地圖。直接寫入如下程式碼：

figure(3)

subplot(2,2,1);

worldmap("China"); mapshow(fnshp_L,"Color","k");

subplot(2,2,2);

worldmap([0,55],[70,140]); mapshow(fnshp_P,"FaceColor",[0.5,1.0,0.5]);

setm(gca,"MLineLocation",10);

setm(gca,"PLineLocation",10);

setm(gca,"MLabelLocation",20);

setm(gca,"PLabelLocation",10);

subplot(2,2,3);

worldmap("China"); geoshow(fnshp_L,"Color","k");

subplot(2,2,4);

worldmap([0,55],[70,140]); geoshow(fnshp_P,"FaceColor",[0.5,1.0,0.5]);

setm(gca,"MLineLocation",10);

setm(gca,"PLineLocation",10);

setm(gca,"MLabelLocation",20);

setm(gca,"PLabelLocation",10);

title("中國地圖","FontSize",14,"FontWeight","Bold")

其中worldmap([0,55],[70,140])為設定顯示緯度經度範圍；setm(gca,"MLineLocation",10)為設定經度間隔；setm(gca,"PLineLocation",10)為設定緯度間隔；setm(gca,"MLabelLocation",20)為設定經度標籤每隔幾度；setm(gca,"PLabelLocation",10)為設定緯度標籤每隔幾度。