ArrayPlot : Strange behaviour

Question

I'm trying to "ArrayPlot" data generated from another code. I need to do it for different dimensions. Below a certain size everything works properly but from some value for the dimension it doesn't work anymore. The .txt files I import are constructed as follow.

1.234,2.567,8.987

4.567,9.543,6.567

4.890,78.56,76.87

as you can see it represents a n by n matrix. The code I use is the following

Husimi = Import["/Users/.../dataexample.txt", {"Data"}];


ArrayPlot[Husimi]

Everything is working fine for matrix up to the dimension n=288, The following case is n=544 and then it doesn't work anymore. The output is a thin vertical line. It seems to me that mathematica is treating my data as a unidimensional list taking every line of my file as a unique element. Any idea why ? I have the feeling that this case is very dumb but I am stuck.

Many thanks in advance

Answer 1

First, delete the empty lines, they will result in empty rows.

Then either store the file with an extension "csv" (comma separated values). Then everything will work:

d = Import["d:/tmp/dat.csv"]
ArrayPlot[d]

{{1.234, 2.567, 8.987}, {4.567, 9.543, 6.567}, {4.89, 78.56, 76.87}}

However, if you insists of using a file extension of "txt", you must specify the format explicitly:

d = Import["d:/tmp/dat.txt", "CSV"]