I follow this document and this question.
I have downloaded ne_10m_admin_1_states_provinces files but I can not find
country_code_index (for Iran Or other country) in it. I use this command in ubuntu command line :
ogrinfo ne_10m_admin_1_states_provinces.dbf -al > Out.txt
out.txt's content is :
How to find --country_code_index AND --country_name_index ?
Go through Map-converter-notes which has very good information about all the steps required to generate a new map from public data.
Linux users can install a very handy tool SAGA-GIS to generate required shape file and then use converter.py to generate map to use with jvectormap.com plugin.
country_code_index is the index of attribute which will be used as code name for specific region on map and country_name_index is the attribute which will be shown as label of region on map. Attributes chosen for these should have unique values in map data table.