Can we get a combo chart for more than one dimension in one single graph through QlikView, so I can have one field shown as line chart and another field shown as bar chart on one graph, just like what can be done in excel. Thanks.
Yes you can. The following is taken from the help:
Charts are graphical representations of numerical data. It is possible to switch between different representations of an existing chart, by changing the Chart Type in the Chart Properties: General page.
The combo chart allows you to combine the features of the bar chart with those of the line chart: you can show the values of one expression as bars while displaying those of another expression as a line or symbols.
The easiest way to create a combo chart is to click the Create Chart button in the toolbar.
By a right-click on the combo chart the Combo Chart: Object Menu will be displayed. It can also be accessed from the Object menu, when the combo chart is the active object