m_map m_quiver

Hi,

When I use the normal quiver in matlab as quiver(lon,lat,U,V), it works fine, but when I use the m_map quiver; m_quiver I get this strange error message:

??? Error using ==> or Inputs must have the same size.

Error in ==> mp_cyl at 96 vals=vals | long<=MAP_VAR_LIST.longs(1)+eps*10 | long>=MAP_VAR_LIST.longs(2)-eps*10 | ...

Error in ==> m_ll2xy at 36 [X,Y,I]=feval(MAP_PROJECTION.routine,'ll2xy',varargin{:},'clip','on');

Error in ==> m_quiver at 55 [X,Y]=m_ll2xy(long,lat,'clip','point');

Error in ==> fsc_monthly_nao_altimetry at 143 m_quiver(lon_i,lat_i,U,V)

Does anyone have a clue what this is about?

I would appreciate some help.

Thanks!

[Laura Proctor]

You may want to check with the maker of the m_map tools. It's not a tool created by MathWorks.

Answer 1

[Brian Hansen]

m_quiver uses a lon and lat matrix, the same size as the data. quiver can plot with lat lon being vectors