Question about PLOTTING over MAPS

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Diana 2012-7-17

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I am using a code to generate the maps, but I'm still having a little trouble adding my own data. What I need is very simple, I have a data file with latitude, longitudes and the number of times that lightning struck on that location (Basically I need a density plot). Any comments will be very helpful.

Thank you, Diana

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Doug Hull 2012-7-17

Do you need this to be on a map projection, or treating the world as flat is fine because lat and lon are really just X and Y to you?

Are you using the mapping toolbox?

do you know how to convert this to density, regardless of it being lat and lon?

Diana 2012-7-17

I am using a map projection (m_proj function) basically yes the map is flat...I had to download and add all the maps library because I have the student version of matlab. And I just have the number of times that it lightning struck on a specific latitude and longitude. I have been able to plot a mark on the location of every strike but my problem is I don't know how to include the number of times in every location with a color bar for better view.

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回答（1 个）

Walter Roberson 2012-7-17

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pointsize = 8;
scatter(lat(:), long(:), pointsize, numstrikes(:))
colorbar

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Walter Roberson 2012-7-17

That package is a bit big for me to "sight read", and unfortunately I do not have access to MATLAB for the next bit of time (waiting for a new computer to arrive...)

I don't think I will be able to assist with that toolbox within a reasonable time.

Diana 2012-7-17