How to make a plot

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Kostas
Kostas 2015-1-24
评论： Image Analyst 2015-1-25
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

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回答（2 个）

Star Strider
Star Strider 2015-1-24
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.
  2 个评论
Kostas
Kostas 2015-1-24
Thank you for your response Star Strider
Star Strider
Star Strider 2015-1-24
My pleasure!

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Image Analyst
Image Analyst 2015-1-24
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?
  2 个评论
Kostas
Kostas 2015-1-25
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
Image Analyst 2015-1-25
Then use scatter().

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