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| visits | member for | 1 year, 2 months |
| seen | 10 hours ago | |
| stats | profile views | 241 |
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1d |
comment |
Is it possible to import data from Google Analytics? Do you have some examples of the messy CSV files perhaps ? |
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May 20 |
comment |
I want to draw a graph using a weighted Adjacency matrix @belisarius Do you mean Mathematica has a shallow learning curve, assuming time on x-axis and amount learnt on y ? :) |
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May 19 |
comment |
Im trying to find the eigenvectors of an 11*11 matrix but can't get it to recognise my data The result of any line you enter which is not terminated with a ';' will be displayed. Alternatively just type the name of a variable and hit 'shift+enter' to see it's contents. For instance: 'myRes=Eigenvectors[mydata]; myRes' |
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May 19 |
answered | Im trying to find the eigenvectors of an 11*11 matrix but can't get it to recognise my data |
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May 17 |
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Applying a function with the HoldAll attribute inside NestList No problem Jack :) |
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May 17 |
comment |
Applying a function with the HoldAll attribute inside NestList I seem to get `mylist = Table[3, {i, 1, 3}]; update[mylist] = {6,3,3}' |
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May 16 |
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TextRecognize with crosses, circles and spaces results into oddities, why? This approach is based on measuring the distance between a sample and a prototype or template, its success or failure depends on the closeness of those two things. As a generalised problem, text recognition is a sub class of machine learning ( aka pattern recognition). There are a broad range of more complex techniques that might be applied here, maybe what you are seeking depends on whether you want to learn in more depth how those things work or if you just need a solution to your immediate problem. |
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May 16 |
comment |
TextRecognize with crosses, circles and spaces results into oddities, why? There are a number of reasons this doesn't give the result you would like. Firstly have you had a look at the structure of grid, particularly what grid[[1]] might look like. Similarity takes a single image as it's first input, not a list of images. Secondly the second parameter is intended to be a set of prototype images which have exactly the same image dimensions as, and a strong visual resemblance to, the images you wish to recognise and a set of labels to associate with those prototypes. |
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May 15 |
answered | TextRecognize with crosses, circles and spaces results into oddities, why? |
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May 11 |
revised |
Mass Symbolic Manipulation with Subscripts? (from plaintext Input) format code segment |
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May 9 |
comment |
Conditionals slower than operators?Print is a poor choice of function to achieve comparative timings in this context. Additionally, if you look at the output from your two timing examples you will see they are not identical. Perhaps you have an example more relevant to you actual problem ? |
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May 7 |
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Why is arithmetic faster for inexact arithmetic? A simple answer is that inexact values make use of built-in hardware support for arithmetic. |
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May 6 |
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location of csv file when importing @Kim The file path you have given "C:\\Users..." seems to be a Windows pathname, but you are using a Macintosh. You have tried b.gatessucks suggestion of using "Insert"->"File path ..." to insert the filename browsed from the file system into your Import statement ? |
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May 6 |
comment |
Import matrices side-by-side separated by TAB @hhh When you say you want to compare the matrices side by side, you mean in the input file, by visual inspection? Or do you want to use Mathematica to compare them in some way ? If the latter, why not make the input format easy for Mathematica to read, either by line alternation, separate files or first half/second half? |
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May 5 |
answered | How can I nicely overlay fits for multiple arrays with ListPlot or ListLogPlot? |
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May 5 |
comment |
Picking certain pairs according to a condition This question is relevant mathematica.stackexchange.com/questions/2486/… |
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May 4 |
revised |
Checking if an expression is equal to zero grammar |
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May 2 |
comment |
Calling blank arguments using enclosing functions You could eliminate the With and just use tform1[mult_, set_, pos_] := (#*mult) & /@ set[[pos[set]]] as per Bill s answer. |
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Apr 30 |
comment |
Significant platform-dependent efficiency when importing data? The efficiency here comes from the fact that you aren't asking Mathematica to import all the data and then remove throw away two thirds of it. You could achieve the same effect by simply using the linux commands given to save a file with only the column you are interested in. I think this is more about ensuring that you read only the data you want. Matheamtica isn't particularly frugal with memory as it is. |
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Apr 29 |
revised |
Importing several huge files with headers & footers added 335 characters in body |
