unknown values in symbol map in tableau

Today i will discuss about the particular issue which i faced in Tableau. When click on symbol map in show me tab. The map did not come up in work space Area and moreover i was getting one message at the right bottom 57 uknown. See the below image  for the same. Before i explain how i corrected this , I would like to tell you about the source data. So , I am using population data of India (Random Numbers) which has fields (city name, state, population). I will share the population…

Change data type of Dimensions in Tableau Worksheet

Today, i will discuss about how to change the data type of a Dimension in Tableau. See the image below with population data (city and state wise). So, the file has city name ,state and Population.  Open Tableau->click on excel->choose the file (population-data.xlsx) ->click Open. Hence, data is imported to Tableau. See the below image for the same.   Next step is click on Sheet1 (left bottom).  Once you open Sheet1 ,see the Dimensions and Measures  on the left pane as below. Here , if you see clearly city name…