I can't use mapping toolbox functions fully on this geotiff image. I got some errors..

% Reads the geotiff file
[boston1, R1] = geotiffread('G:\bhvan\rad.tif');
Reg=R1;
figure
mapshow(boston1, Reg);
axis image off

but I got below errors...

Error using checkImage>checkRGBImage (line 52)
RGB images must be size M-by-N-by-3.

Error in checkImage (line 37)
RGB = checkRGBImage(A);

Error in validateMapRasterData>parseImageInputs (line 128)
A = checkImage(mapfcnname, A, cmap, 1, 2);

Error in validateMapRasterData>validateImageComponent (line 93)
        [A, R] = parseImageInputs(mapfcnname, dataArgs{:}, cmap, rules );

Error in validateMapRasterData (line 27)
        [Z, SpatialRef] =  validateImageComponent(mapfcnname, ...

Error in maprastershow (line 127)
[Z, SpatialRef, displayType, HGpairs] = ...

Error in mapshow (line 231)
h = showFcn(varargin{:});

Answer 1

[Image Analyst]

What does it say if you do

whos boston1

right after you read it in?

[D.Regan]

if true
  % code
endok. Actually variable R1 is R1=[1 2]. It shows error in display. but I inspired this from matlab help page as

Example ------- % Read and display the Boston GeoTIFF image. % Includes material (c) GeoEye, all rights reserved. [boston, R] = geotiffread('boston.tif'); figure mapshow(boston, R) axis image off

But R here is R=[1 1], shows display. but in my script, if R1 size R1=[1 2], I got error.. help me to find error...

[Image Analyst]

Alright, but same question just different variable name:

What does it say if you do

whos R1
whos boston

right after you read it in? Simply giving it a variable name of R1 instead of R for the return argument is not going to cause it to fail.

Also, read this http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup