a='Hello World!' a = Hello World! whos Name Size Bytes Class a 1x12 24 char array ans 1x88 176 char array Grand total is 100 elements using 200 bytes b=[a;a] b = Hello World! Hello World! disp(b) Hello World! Hello World! b=['hello world';'howdy'] ??? Error using ==> vertcat All rows in the bracketed expression must have the same number of columns. b=['hello world';'howdy '] ??? Error using ==> vertcat All rows in the bracketed expression must have the same number of columns. b=['hello world';'howdy '] b = hello world howdy int2str(10) ans = 10 num2str(10) ans = 10 num2str([10, 10.5]) ans = 10 10.5 int2str([10, 10.5]) ans = 10 11 str='scripts are evil!' str = scripts are evil! I=findstr('evil', str) I = 13 str(I:end) ans = evil! str(I:end-1) ans = evil I=findstr('e', str) I = 11 13 str(I:length(str)) ans = e evil! d=pi d = 3.1416 whos d Name Size Bytes Class d 1x1 8 double array Grand total is 1 element using 8 bytes pistr=num2str(d) pistr = 3.1416 whos pistr Name Size Bytes Class pistr 1x6 12 char array Grand total is 6 elements using 12 bytes pistr(1) ans = 3 pistr(2) ans = . path MATLABPATH /Alvin/m-files/opnml /Alvin/m-files/NWASC /Alvin/m-files/netcdf/ncutility /Alvin/m-files/netcdf/nctype /Alvin/m-files/netcdf/ncfiles /Alvin/m-files/netcdf /Alvin/m-files/netcdfinterface /Alvin/m-files/WHALES /Alvin/m-files/BIOMAPPER/TSplotter /Alvin/m-files/BIOMAPPER /Alvin/m-files/MARMAP/mmdb /Alvin/m-files/MARMAP/mminterface /Alvin/m-files/MARMAP /Alvin/m-files/theory /Alvin/m-files/statistics /Alvin/m-files/MPQUOD /Alvin/m-files/meshpart /Alvin/m-files/misc /Alvin/m-files/graphics /Alvin/m-files/forward /Alvin/m-files/Hydra /Alvin/m-files/diffusiontheory 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