First, create a global filter to exclude the n/a values from your dashboard.
imprimer Tableau Global Filter
Pics. Learn to see and understand data with tableau. Tableau 9 essential training explains how to analyze and present data using this powerful data visualization program.
Dashboard Element 4: The Global Filters Tab | Ryan Sleeper from b6d1pk1fu4-flywheel.netdna-ssl.com
Filters in tableau will assist us to visualize data efficiently and quickly. It means each of the filter reads all the rows from the source data and creates its own result. On the filtration pane, locate the global filter and position the mouse pointer within it.
The filter dialog box (aka regular filters) has a few more options:
Note that buttons will get better very soon in tableau 2018.3. The used workbook is attached for download and i have used superstore. For example, we can exclude a region from the display, or we can display the top 10 performing records or low performing. Dive into all that tableau 2018 has.
