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don't know if anyone can help me here.

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Shani 2013-11-19

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评论： Image Analyst 2013-11-23

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Walter Roberson 2013-11-20

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What kind of analysis do you want to do? What is it about the array that you want to analyze?

Marc 2013-11-21

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How about nlinfit from the stats toolbox. If your heart is set on neural networks, start reading the documentation.

Otherwise, show us some attempt at some work and maybe we can better help.

Image Analyst 2013-11-23

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Your subject line (at least at the current moment) says "don't know if anyone can help me here". I'd say you're making that very very unlikely with your scorched earth policy of deleting your past questions. I probably won't be helping you anymore.

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Image Analyst 2013-11-20

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Try griddata(), TriScatteredInterp(), or scatteredInterpolant() depending on what version of MATLAB you have. Or if you have an image and need to fill in "holes" due to missing/black pixels in the image then try roifill() in the Image Processing Toolbox.

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Shani 2013-11-20

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I think I will use the neural network toolbox. I haven't got the slightest how to use it. any idea?

Image Analyst 2013-11-20

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I don't have it either. Why do you think that NNs are the best way to get the values that you don't have or are missing?

Oh, wait a minute, when you say "values you don't have" you're not talking about missing values, like your data stream dropped out for a few seconds or your profilometer was unable to generate a height data value for that pixel or something like that. Perhaps you're talking about just simple interpolation or extrapolation via some model or equation. So you train it (build the model/equation) with some values and you want estimated values for some other values. Is that it?

Shani 2013-11-20

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Yeah basically, I have the weighting of a set of data series, which weighs the relative contributions of the principal components of the data set. Using this sets of weights/ information, the relating parameters are to be used, so I can predict values not originally in the data series. and I am a basic user for matlab I would not be able to build a model or non linear equation as I have basic understanding unless someone majorly helps me

Image Analyst 2013-11-20

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I don't know what you have right now. Only data? Or were you able to get model weights by using something like polyfit()? And you need to know how to get estimated values (at locations not included in the training set you used to build the model) using polyval()?

Shani 2013-11-21

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I have got the model weightings, not using polyfit. Just simple mathematics. I am not sure how to use polyval but yeah I need to get predicted values. I need to create a neural network toolbox tho.

Image Analyst 2013-11-21

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Then why can't you just do y = a1 + a2*x + a3*x^2 + .....?

Shani 2013-11-21

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Because I need to use the neural network for prediction. There is no one to help on this issue, I have tried on matlab answers, do you know anywhere where I could get help using the neural toolbox? like another link or something? please

Image Analyst 2013-11-21

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Greg Heath is the NN expert here. You mgiht just have to wait until he logs in. Did you list the Neural Network Toolbox as a product? No, it looks like not. So that may be why he did not open your question or see it. Why don't you do that? Or else call the Mathworks? Do you have a full license with maintenance contract?