On 12/15/2011 11:45 AM, Michael Goffioul wrote:
2011/12/15 jacques.beilin<address@hidden>:
Hi,
Here are the scripts. The script compare_fltk_gnuplot.m loads the
data and
creates the plots using the 2 backends.
The columns in deltaXYZ.txt are : column 1 : Modified Julian Date,
Columns
2,3,4 : X,Y,Z
I suppose I am doing something wrong but I cannot see what !
I don't think you are. My first idea would be that the problem is due
to rounding errors in OpenGL (which internally uses single floats, not
double).
Michael.
it is a rounding error.
all the data on the first column are very near
5.51300201e+04 -2.02548504e-02 1.06003433e-02 2.65523735e-02
5.51300208e+04 -2.34114490e-02 1.00998580e-02 3.53220068e-02
...
5.51300889e+04 -6.01677597e-03 -5.80356270e-03 3.66309634e-02
5.51300896e+04 -7.13784248e-03 -5.65697253e-03 3.21426634e-02
Jaques,
if from the original data you remove 55130, you will see the expected
shape.
Regards
Marco
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