Specifying X-Axis Data :: Creating Specialized Plots (Graphics)

Graphics

Specifying X-Axis Data

Bar graphs automatically generate x-axis values and label the x-axis tick lines. You can specify a vector of x values (or y values in the case of horizontal bar graphs) to label the axes.

For example, given temperature data,

```
temp = [29 23 27 25 20 23 23 27];
```

obtained from samples taken every five days during a thirty-five day period,

```
days = 0:5:35;
```

you can display a bar graph showing temperature measured along the y-axis and days along the x-axis using

```
bar(days,temp)
```

These statements add labels to the x- and y-axis.

xlabel('Day')
ylabel('Temperature (^{o}C)')

Setting Y-Axis Limits

By default, the y-axis range is from 0 to 30. To focus on the temperature range from 15 to 30, change the y-axis limits.

set(gca,'YLim',[15 30],'Layer','top')

Stacked Bar Graphs to Show Contributing Amounts Overlaying Plots on Bar Graphs