Re: (no subject)

[Tatsuro MATSUOKA]

>>On Fri, Jun 10, 2016 at 5:49 AM, Lester Anderson  wrote:
>>
>>Hi Kai,
>>>
>>>Thanks for the info and the code tweak; seems to be ok for one
>>>function. Basically trying to get a public-domain code to run
>>>(http://www.ux.uis.no/~nestor/work/matlabScripts.html) and
>>>specifically 1D Airy backstrip.
>>>
>>>With your code tweak it seems to run, but I am not sure it is reading
>>>the datafile, which should create a 2D matrix (A), however A() does
>>>not show up in the list of variables.
>>>
>>>%read parameters from a txt file
>>>
>>>[datafile] = uigetfile('*.txt','Choose a txt file');
>>>A=load(datafile); <- this should be fine
>>>
>>these 2 lines work for me.
>>Maybe your txt file does not have 8 coulombs?
>>
>>
>>
>>
>> 
>>zt = A(:,1);
>>>zb = A(:,2);
>>>agetop = A(:,3);
>>>agebas = A(:,4);
>>>psed = A(:,5);
>>>c = A(:,6);
>>>surpor = A(:,7);
>>>basset = A(:,8);
>>>
>>>flagfile = 1;
>>>flagunits = 1;
>>>flagage = 1;
>>>flagdens = 1;
>>>flagporo = 1;
>>>
>>>Running the code :
>>>>> backstrip
>>>>> error: water: A(I): index out of bounds; value 2 out of bound 1 - suspect 
>>>>> this is because the matrix A is not loaded?
>>>error: called from
>>>    water at line 55 column 19
>>>
>>>Leste
>>>
>>>
>>>
>>>
>>>On 10 June 2016 at 09:13, siko1056 <address@hidden> wrote:
>>>> Dear Lester,
>>>>
>>>> Yes this behavior of fzero, passing extra arguments, in Matlab is known 
>>>> [1],
>>>> e.g. Matlab allows:
>>>>
>>>> mysin = @(x,a,b) a*sin(x)+b
>>>> fzero (mysin, 1, [], 2, 0.2)
>>>>
>>>> Octave doesn't. Matlab still supports this behavior maybe for legacy 
>>>> reason,
>>>> but does not document this and recommends using other methods [2], that
>>>> Octave supports as well. For your Example:
>>>>
>>>> allequ2 = @(x) allequ(x,Y1(j,i),zb(j),zt(j),surpor(j),c(j));
>>>> yy = fzero(allequ2,Y2(j,i),options);
>>>>
>>>> HTH, Kai
>>>>
>>>>
>>>> [1]
>>>> http://octave.1599824.n4.nabble.com/passing-parameters-to-fzero-fsolve-td1637028.html
>>>> [2] https://www.mathworks.com/help/matlab/ref/fzero.html#inputarg_fun
>>>>

> 15.417    16    176.5    193    2715    0.61    0.665    1
> 10.11    15.417    142    176.5    2671    0.342    0.532    1
> 9.805    10.11    137    142    2650    0.27    0.49    1
> 9.377    9.805    127    137    2710    0.71    0.7    1
> 8.752    9.377    112.2    127    2720    0.51    0.63    1
> 8.502    8.752    110    112.2    2710    0.71    0.7    1
> 7.735    8.502    98.9    110    2720    0.51    0.63    1
> 7.61    7.735    93.5    98.9    2710    0.71    0.7    1
> 7.31    7.61    83.5    93.5    2713    0.65    0.679    1
> 6.235    7.31    65    83.5    2709.5    0.474    0.609    1
> 5.01    6.235    55    65    2692    0.414    0.574    1
> 5.01    5.01    43    55    0    0    0    2
> 4.75    5.01    35.3    43    2669.469    0.337    0.529    2
> 4.15    4.75    31.1    35.3    2685    0.39    0.56    2
> 3.15    4.15    23.8    31.1    2685    0.39    0.56    2
> 2    3.15    12.7    23.8    2678    0.366    0.546    2
> 0    2    5.4    12.7    2679    0.372    0.55    2

The separator is tab. 

load command requires header which describe variable information like

#
Created by Octave 3.6.4, Fri Feb 14 16:11:23 2014 JST <address@hidden>
#
name: xydata
#
type: matrix
#
rows: 11
#
columns: 2
0
0
0.6283185307179586
0.5877852522924731
1.256637061435917
0.9510565162951535
1.884955592153876
0.9510565162951536
2.513274122871835
0.5877852522924733
3.141592653589793
1.224646799147353e-016
3.769911184307752
-0.587785252292473
4.39822971502571
-0.9510565162951535
5.026548245743669
-0.9510565162951536
5.654866776461628
-0.5877852522924734
6.283185307179586
-2.449293598294706e-016
 
Please use "dlmread" instead.
(For detail see >> help dlmread)

Tatsuro