Create a nodes file to be read by NREAD??

[gmtl]

Hi,

How to create a nodes file to be read by NREAD? I can’t seam to find the right format of file to be able to create nodes with NREAD. I used NWRITE to check the file format but it still doesn’t work. What’s the format (I8, 6G20.13) that NWRITE uses?

PS: Before reading the file (NREAD), the element type was specified.

Thanks,

Here are some examples.

File from NWRITE
1
2 0.5526100000000E-02 0.6182280000000
3 0.4456532258065E-04 0.4985709677419E-02
4 0.8913064516129E-04 0.9971419354839E-02
5 0.1336959677419E-03 0.1495712903226E-01
6 0.1782612903226E-03 0.1994283870968E-01
7 0.2228266129032E-03 0.2492854838710E-01
8 0.2673919354839E-03 0.2991425806452E-01
9 0.3119572580645E-03 0.3489996774194E-01

Works with NREAD

File from NWRITE modified ( added Z values and changed E for e)
1
2 0.5375159707773e-02 0.5402480264766 0.3099272175625
3 0.4456532258065e-04 0.4985709677419e-02 0.6182280000000
4 0.8913064516129e-04 0.9971419354839e-02 0.9971419354839e-02
5 0.1336959677419e-03 0.1495712903226e-01 0.9971419354839e-02
6 0.1782612903226e-03 0.1994283870968e-01 0.9971419354839e-02
7 0.2228266129032e-03 0.2492854838710e-01 0.1495712903226e-01
8 0.2673919354839e-03 0.2991425806452e-01 0.1495712903226e-01
9 0.3119572580645e-03 0.3489996774194e-01 0.1495712903226e-01

Works with NREAD

File from MATLAB (dlmwrite, 14 digits precision)

1 -525.37515907773 540.92480264766 -30.379272175625
2 -260.47801009582 773.65019895784 -39.726405803027
3 -398.33438474916 698.7677590057 -34.854270319014
4 -353.42550861994 727.19981543301 -36.616499075492
5 -502.55370837837 408.58855133112 -31.528843577056
6 -455.74447991072 319.0380154567 -32.661907016793
7 -343.16047945133 821.48253969116 -40.340795529849
8 -179.97847924728 388.8076710432 -32.310835595606
9 -477.31026663364 506.48724347928 -30.831110946955
Doesn’t work with NREAD

File from MATLAB (dlmwrite, 14 digits precision) but changed.

1 -0.5375159707773 0.5402480264766 -0.3099272175625
2 -0.2647801009582 0.7735019895784 -0.3926405803027
3 -0.3933438474916 0.6986775900576 -0.3454270319014
4 -0.3542550861994 0.7279981543301 -0.3616499075492
5 -0.5055370837837 0.4088855133112 -0.3128843577056
6 -0.4574447991072 0.3193801545677 -0.3261907016793
7 -0.3416047945133 0.8218253969116 -0.4040795529849
8 -0.1797847924728 0.3880767104329 -0.3210835595606
9 -0.4731026663364 0.5068724347928 -0.3031110946955
Doesn’t work with NREAD

File from MATLAB (dlmwrite, 14 digits precision) but changed.
1 -525.37515907773 540.92480264766 -30.379272175625
2 -260.47801009582 773.65019895784 -39.726405803027
3 -398.33438474916 698.76775900576 -34.854270319014
4 -353.42550861994 727.19981543301 -36.616499075492
5 -502.55370837837 408.58855133112 -31.528843577056
6 -455.74447991072 319.03801545677 -32.661907016793
7 -343.16047945133 821.48253969116 -40.340795529849
8 -179.97847924728 388.80767104329 -32.310835595606
9 -477.31026663364 506.48724347928 -30.831110946955

Doesn’t work with NREAD


File from MATLAB (save -ascii)

1.0000000e+000 -5.2537516e+002 5.4092480e+002 -3.0379272e+001
2.0000000e+000 -2.6047801e+002 7.7365020e+002 -3.9726406e+001
3.0000000e+000 -3.9833438e+002 6.9876776e+002 -3.4854270e+001
4.0000000e+000 -3.5342551e+002 7.2719982e+002 -3.6616499e+001
5.0000000e+000 -5.0255371e+002 4.0858855e+002 -3.1528844e+001
6.0000000e+000 -4.5574448e+002 3.1903802e+002 -3.2661907e+001
7.0000000e+000 -3.4316048e+002 8.2148254e+002 -4.0340796e+001
8.0000000e+000 -1.7997848e+002 3.8880767e+002 -3.2310836e+001
9.0000000e+000 -4.7731027e+002 5.0648724e+002 -3.0831111e+001
1.0000000e+001 -3.3847569e+002 7.5061756e+002 -3.7743572e+001
Doesn’t work with NREAD

File from MATLAB (save -ascii) but changed

1 -5.2537516e+002 5.4092480e+002 -3.0379272e+001
2 -2.6047801e+002 7.7365020e+002 -3.9726406e+001
3 -3.9833438e+002 6.9876776e+002 -3.4854270e+001
4 -3.5342551e+002 7.2719982e+002 -3.6616499e+001
5 -5.0255371e+002 4.0858855e+002 -3.1528844e+001
6 -4.5574448e+002 3.1903802e+002 -3.2661907e+001
7 -3.4316048e+002 8.2148254e+002 -4.0340796e+001
8 -1.7997848e+002 3.8880767e+002 -3.2310836e+001
9 -4.7731027e+002 5.0648724e+002 -3.0831111e+001
1 -3.3847569e+002 7.5061756e+002 -3.7743572e+001
Doesn’t work with NREAD

File from MATLAB (save -ascii -double -tabs)

1.0000000000000000e+000 -5.2537515907773434e+002 5.4092480264765675e+002 -3.0379272175625175e+001
2.0000000000000000e+000 -2.6047801009582111e+002 7.7365019895784212e+002 -3.9726405803026907e+001
3.0000000000000000e+000 -3.9833438474916392e+002 6.9876775900570044e+002 -3.4854270319013828e+001
4.0000000000000000e+000 -3.5342550861994278e+002 7.2719981543301174e+002 -3.6616499075492413e+001
5.0000000000000000e+000 -5.0255370837837057e+002 4.0858855133112098e+002 -3.1528843577055575e+001
6.0000000000000000e+000 -4.5574447991071929e+002 3.1903801545670387e+002 -3.2661907016793322e+001
7.0000000000000000e+000 -3.4316047945133425e+002 8.2148253969115660e+002 -4.0340795529848968e+001
8.0000000000000000e+000 -1.7997847924727580e+002 3.8880767104319517e+002 -3.2310835595605724e+001
9.0000000000000000e+000 -4.7731026663363809e+002 5.0648724347928248e+002 -3.0831110946955317e+001
1.0000000000000000e+001 -3.3847568914050169e+002 7.5061756108116697e+002 -3.7743571713360403e+001

Doesn’t work with NREAD

 

[cbrn]

Hi,
it seems to me that every file that doesn't work with NREAD has one or several formatting inconsistencies:
- the fields must be fixed-width
- the fields must be separated by space(s) (NEVER by a tabulation)
- although it's not rigorously mandatory, you'd better format the scientific notation as -X.XXXXXXE-YY (where the sign - can obviously be replaced by +). It's mandatory to have 2 digits in the exponent (sign excluded). In order to know how many digits to use in the decimal part, look at how many there are in the NWRITE. I seem to remember that the total column width for each field is 10 characters (signs included)

Regards