Hi Hussain,
Charts are graphical representations of numerical data. ... Mekko charts present data using variable width bars. They can display up to three levels of data in a two-dimensional chart. Mekko charts are useful in such areas as market analysis
Block Chart. Charts are graphical representations of numerical data. ... The block chart shows the relation between expression values as blocks of varying area. Up to three dimensions can be displayed, where each dimension is subdivided into sub-blocks.
The Block chart shows the relation between expression values as blocks of varying area. From a display standpoint it is related to the pie chart. The chart may be shown with either segment height/width or segment area proportional to data. It is also possible to draw the chart with equal segment heights/widths, disregarding data points.
for more Details go through these links, It's might be helpful for you.
https://www.think-cell.com/en/support/manual/mekko.shtml
https://www.tutorialgateway.org/block-chart-in-qlikview/
Regards,
Vinayak
