How to make a plot

Hello i need your help to make a plot like the attached one. i have my data in separated vectors, i.e.

x y and z

Thank you in advance

Answer 1

[Star Strider]

See the documentation for the image function. It can probably do what you want.

Also see the list of related functions at the end of that page.

[Kostas]

Thank you for your response Star Strider

[Star Strider]

My pleasure!

Answer 2

[Image Analyst]

What does x, y, and (especially) z represent? What happens if there is an x,y,z triplet that is not represented? Is x the column, y the row, and z the gray level, or are x and y more continuous, in which case you'll have to decide what digital resolution you want in the image to represent that continuum of x and y?

[Kostas]

x is the year (x from 2000 to 2010), y is the day of the year (y -> 1 to 365 or 366 for leap years) and z is the measurement of the day (it is integer and when no value i have assigned it as NaN). So i want to "represent" the number of measurements for each day. The dataset i have looks like

2000 1 25
2000 2 21
2000 3 NaN
2000 4 8
.    . .
.    . .

I managed to make this plot, using meshgrid and contour, but i 'd prefer if i could have more "distinct" colors for each day.

[Image Analyst]

Then use scatter().