How to insert bar markers in a line plot

Hi,

I've been plotting a line graph of a cell's response to different chemicals administered at different times. The dataset is a 1470x1 double. I ran this code to generate a graph:

load(data)

t = linspace(0,length(data)*2, length(data)); % create a vector specifying the data to use for the x axis. i need to adjust the axis because the data was collected in a different timeframe

plot(t, data);

I want to be able to show the names of the compounds injected with text labels and I also want to have bars underneath the line plot that indicate when a stimulus was injected and for how long (i.e. at 1500 seconds Compound 8 was injected for 20 seconds). I drew a picture to illustrate my idea:

Does anyone know how I can make this happen? Thank you.

[dpb]

Use patch with a column for each compound x,y coordinates; and text to write the labels.

I'm too lazy to make up the data to illustrate but shouldn't be difficult at all.

[Aaron Ouyang]

Got it, thank you so much.

Answer 1

[Aaron Ouyang]

See dpb comment