MATLAB: I want to read and view geotiff in matlab but I could not open the file ‘AddisAbaba.tif’ file. Any help please

Mapping Toolboxmapshow error

 Here is the command I have used
[AddisAbaba,R] = geotiffread('AddisAbaba.tif');
figure
mapshow(AddisAbaba,R);
axis image off
but i have got error of the following error
Error using checkRefObj (line 25)
Function mapshow expected input number 2, R, to be either a 3-by-2 referencing matrix or a
scalar map raster reference object. Instead its type was:
map.rasterref.GeographicCellsReference.

Error in validateMapRasterData>parseImageInputs (line 112) refmat = checkRefObj(mapfcnname, R, size(A), R_position);

Error in validateMapRasterData>validateImageComponent (line 92) [A, R] = parseImageInputs(mapfcnname, dataArgs{:}, cmap, rules );

Error in validateMapRasterData (line 26) [Z, SpatialRef] = validateImageComponent(mapfcnname, …

Error in maprastershow (line 126) [Z, SpatialRef, displayType, HGpairs] = …

Error in mapshow (line 228) h = showFcn(varargin{:});

Error in DEM (line 5) mapshow(AddisAbaba,R);

Best Answer

Your GeoTIFF seems to be geographic reference data, so how about trying geoshow instead of mapshow?

The following codes would work.

[AddisAbaba,R] = geotiffread('AddisAbaba.tif');
figure
geoshow(AddisAbaba,R);
axis image off

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MATLAB: How can we find the non common strings from multiple columns

First lets find the strings that are common to all cell arrays:

listA={'India','Iran','Ireland','Israel','Jordan','Kuwait','Lebanon','Lesotho','Libya','Luxembourg','Malawi','Maldives','Morocco','Nepal','Netherlands','Norway','Oman','Paraguay','Peru','Philippines',};
listB={'Denmark','El Salvador','Gabon','Gambia','Lebanon','Lesotho','Libya','Luxembourg','Malawi','Maldives','Morocco','Nepal','Netherlands','Norway','Oman','Paraguay','Peru','Philippines','Qatar','Rwanda','Saudi Arabia','Senegal','Singapore','Sudan'};
listC={'Kuwait','Lebanon','Lesotho','Nepal','Netherlands','Oman','Sweden','Syria','Tanzania','Turkey','Uruguay'};
%

lists = {listA,listB,listC}; % storing data together makes working with them much simpler.
%
exc = lists{1};
for k = 2:numel(lists)
    exc = intersect(exc,lists{k});
end

giving the strings found in all cell arrays as:

 exc =
    'Lebanon'
    'Lesotho'
    'Nepal'
    'Netherlands'
    'Oman'

Now we can easily get the input cell arrays with the strings from exc removed:

out = cell(size(lists));
for k = 1:numel(lists)
    out{k} = setdiff(lists{k},exc);
end

giving:

>> out{:}
ans = 
    'India' 'Iran' 'Ireland' 'Israel' 'Jordan' 'Kuwait' 'Libya' 'Luxembourg' 'Malawi' 'Maldives' 'Morocco' 'Norway' 'Paraguay' 'Peru' 'Philippines'
ans =
    'Denmark' 'El Salvador' 'Gabon' 'Gambia' 'Libya' 'Luxembourg' 'Malawi' 'Maldives' 'Morocco' 'Norway' 'Paraguay' 'Peru' 'Philippines' 'Qatar' 'Rwanda' 'Saudi Arabia' 'Senegal' 'Singapore' 'Sudan'
ans =
    'Kuwait' 'Sweden' 'Syria' 'Tanzania' 'Turkey' 'Uruguay'

And if you want a list of all strings together, excluding those in exc:

uni = {};
for k = 1:numel(lists)
    uni = union(uni,lists{k});
end
uni = setdiff(uni,exc)

gives:

uni =
    'Denmark' 'El Salvador' 'Gabon' 'Gambia' 'India' 'Iran' 'Ireland' 'Israel' 'Jordan' 'Kuwait' 'Libya' 'Luxembourg' 'Malawi' 'Maldives' 'Morocco' 'Norway' 'Paraguay' 'Peru' 'Philippines' 'Qatar' 'Rwanda' 'Saudi Arabia' 'Senegal' 'Singapore' 'Sudan' 'Sweden' 'Syria' 'Tanzania' 'Turkey' 'Uruguay'

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geotiffread results in a type 'single' but mapshow defaults to a 'image' that can only accept 'double' (and some other formations not including 'single'). Either A=double(A) or mapshow(A,R,'DisplayType','surface')

Best Answer

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