OpenOffice.org OpenOffice - 3.3 Základní průvodce stáhnout pdf (Strana 89)

Position is defined as a X,Y coordinate relative to a fixed point (the base point),

typically located at the upper left of the document. You can temporarily change this

base point to make positioning or dimensioning simpler (click on the spot

corresponding to the location of the base point in either of the two selection windows

on the right side of the dialog—upper for positioning or lower for dimensioning).

The possible base point positions correspond to the handles on the selection frame

plus a central point. The change in position lasts only as long as you have the dialog

open; when you close this dialog, Calc resets the base point to the standard position.

Tip

The Keep ratio option is very useful. Select it to keep the ratio of width

to height fixed while you change the size of an object.

Either or both the size and position can be protected so that they cannot be

accidentally changed. Select the appropriate options.

Tip

If you cannot move an object, check to see if its position is protected.

Gallery of chart types

Its important to remember that while your data can be presented with a number of

different charts, the message you want to convey to your audience dictates the chart

you ultimately use. The following sections present examples of the types of charts

that Calc provides, with some of the tweaks that each sort can have and some notes

as to what purpose you might have for that chart type. For further details, see the

OpenOffice.org Help index.

Column charts

Column charts are commonly used for data that shows trends over time. They are

best for charts that have a relatively small number of data points. (For a larger time

series, a line chart would be better.) It is the default chart type, as it is one of the

most useful charts and the easiest to understand.

Bar charts

Figure 83: Three bar graph treatments.

Chapter 3 Creating Charts and Graphs 89

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OpenOffice.org OpenOffice - 3.3 Základní průvodce Strana 89