Dear Stephane, thanks for your help. I think in my case the problem is solved just by using:
[Minstances_hat] = unique(B(:)); This gives a vector of used px-values for different objects shown in image. Each object is defined by a single pixel value. Since B is the B-plane of an RGB-image, it is possible to assign each pixel from the original image to an object using these values. Thanks again, Philipp Am Mi., 16. Okt. 2019 um 13:27 Uhr schrieb Stéphane Mottelet < stephane.motte...@utc.fr>: > Sorry, in my answer the loop constructs "ic", not "ia", i.e. the full > equivalent to Matlab's "[C,ia,ic] = unique(A)" is in Scilab: > > [C,ia] = unique(A) > for i=1:length(A) > ic(i)=find(A(i)==C) > end > > S. > Le 16/10/2019 à 13:19, Stéphane Mottelet a écrit : > > Sorry, I thought you were just asking about the tildas, not the syntax of > unique() in Scilab. > > Please see > > https://help.scilab.org/docs/6.0.2/en_US/unique.html > <https://antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/help.scilab.org/docs/6.0.2/en_US/unique.html> > > vs > > https://fr.mathworks.com/help/matlab/ref/unique.html > <https://antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/fr.mathworks.com/help/matlab/ref/unique.html> > > Matlab syntax [C,ia,ic] = unique(___) with 3 outputs has no equivalent in > Scilab. i.e. in Matlab, after [C,ia,ic] = unique(A) then A=C(ic), i.e. > values in ic are the indices of corresponding unique value in C. They can > be recovered with the quick and dirty following loop: > > for i=1:length(a) > ia(i)=find(a(i)==C) > end > S. > > Le 16/10/2019 à 12:10, P M a écrit : > > [ans,ans,Minstances_hat] = unique(B(:)); > gives: Wrong number of output arguments. > > I also tried : > > [Minstances_hat] = unique(B(:)); > > and get a vector. > also > > [Minstances_hat,index] = unique(B(:)); > > seem to work. > > > However afterwards there is this line: > > masks = reshape(Minstances_hat-1,size(B)); > > I try to convert via: > > mask = matrix(Minstances_hat-1,size(B)); > > but no success. > > > > > > > Am Mi., 16. Okt. 2019 um 11:50 Uhr schrieb Stéphane Mottelet < > stephane.motte...@utc.fr>: > >> Hello >> Le 16/10/2019 à 11:46, P M a écrit : >> >> Dear experts, >> >> trying to convert a matlab code to scilab I come across following line: >> >> [~,~,Minstances_hat] = unique(B(:)); >> >> How to replace the "~" symbol? >> >> by dummy names, e.g. >> >> [ans,ans,Minstances_hat] = unique(B(:)); >> >> There is no equivalent mechanism in Scilab. >> >> B is the blue channel of a RGB image...hence a m x n matrix of integers >> (type(B) = 8 ) >> >> >> Thank you, >> >> Philipp >> >> >> _______________________________________________ >> users mailing >> listusers@lists.scilab.orghttps://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users >> >> <https://antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users> >> >> -- >> Stéphane Mottelet >> Ingénieur de recherche >> EA 4297 Transformations Intégrées de la Matière Renouvelable >> Département Génie des Procédés Industriels >> Sorbonne Universités - Université de Technologie de Compiègne >> CS 60319, 60203 Compiègne cedex >> Tel : +33(0)344234688http://www.utc.fr/~mottelet >> <https://antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/www.utc.fr/~mottelet> >> >> _______________________________________________ >> users mailing list >> users@lists.scilab.org >> http://lists.scilab.org/mailman/listinfo/users >> <https://antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users> >> > > _______________________________________________ > users mailing > listusers@lists.scilab.orghttps://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users > > <https://antispam.utc.fr/proxy/2/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users> > > -- > Stéphane Mottelet > Ingénieur de recherche > EA 4297 Transformations Intégrées de la Matière Renouvelable > Département Génie des Procédés Industriels > Sorbonne Universités - Université de Technologie de Compiègne > CS 60319, 60203 Compiègne cedex > Tel : +33(0)344234688http://www.utc.fr/~mottelet > <https://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/www.utc.fr/~mottelet> > > > _______________________________________________ > users mailing > listusers@lists.scilab.orghttps://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lists.scilab.org/mailman/listinfo/users > > -- > Stéphane Mottelet > Ingénieur de recherche > EA 4297 Transformations Intégrées de la Matière Renouvelable > Département Génie des Procédés Industriels > Sorbonne Universités - Université de Technologie de Compiègne > CS 60319, 60203 Compiègne cedex > Tel : +33(0)344234688http://www.utc.fr/~mottelet > > _______________________________________________ > users mailing list > users@lists.scilab.org > http://lists.scilab.org/mailman/listinfo/users >
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