Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Try solver System of linear algebraic equations in Shell Bash

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Try solver System of linear algebraic equations in Shell Bash
# 1  
Old 10-03-2012
Try solver System of linear algebraic equations in Shell Bash
I want to try solving system of linear algebraic equations in Shell bash but i have any problems Value input is matrix and I dont know how to input matrix in Shell because that is dont support 2-dimensional array Please help me. Thank you so much
# 2  
Old 10-03-2012
ksh93 supports multidimensional arrays. Here is a simple example.
Code:
#!/bin/ksh93

for i in 1 2 3
do
   for j in 4 5 6
   do
       for k in 7 8 9
       do
           array[$i][$j][$k]=$(( i + j + k ))
#          echo ${array[$i][$j][$k]}
       done
   done
done

for i in 1 2 3
do
   echo ${array[$i][4][7]}
done

outputs
Code:
12
13
14

I think, but have not verified, that zsh also supports multidimensional arrays.
This User Gave Thanks to fpmurphy For This Post:
newbieseos
# 3  
Old 10-03-2012
This is not an apt place to discuss mathematics. But here's a hint. Try converting a 2D matrix into a linear matrix. Think of some way to map each element of a 2D array to a 1D array. Cheers Smilie
# 4  
Old 10-03-2012
Thanks for all your replying
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk - sed / reading from a data file and doing algebraic operations

Hi everyone, I am trying to write a bash script which reads a data file and does some algebraic operations. here is the structure of data.xml file that I have; 1 <data> 2 . 3 . 4 . 5 </data> 6 <data> 7 . 8 . 9 . 10</data> etc. Each data block contains same number of lines (say... (4 Replies)
Discussion started by: hayreter
4 Replies

2. Shell Programming and Scripting

Problem in algebraic substraction

my code is like this count=`cat /filecount.txt | tail -1 |head -1| awk '{print $1}'` ###file is having value 264 #### echo "actual count = $count" exact_count=`expr $value \* 24` echo "exact_count= $exact_count" diff=`expr "$exact_count" - "$count"` a= exact_count - count ... (8 Replies)
Discussion started by: sagar_1986
8 Replies

3. Shell Programming and Scripting

problem in algebraic expression

count=`cat /filecount.txt | tail -1 |head -1| awk '{print $1}'` exact_count=`expr $value \* 24` i want to subtract a="$exact_count" - "$count" but its not taking o/p of "count" as number $a is wrong answer hence not getting proper output. plz help me out :confused: Please use... (3 Replies)
Discussion started by: sagar_1986
3 Replies

4. UNIX for Dummies Questions & Answers

Awk - Two equations?

I really know barely anything about awk and the like but I have a bit of code I need help with. The bash script is meant to get my usage numbers from my ISP and it does so perfectly. However I want to know how much I can use each day. So to do this I would need to divide its output by the number... (5 Replies)
Discussion started by: Light_
5 Replies

5. Programming

Linear hashing implementation in C language

Hi, I'm looking for linear hashing implementation in C language. Please help. PS: I have implement this on Ubuntu 10.04 Linux on 64 bit machine. (1 Reply)
Discussion started by: sajjar
1 Replies

6. Programming

Linear linked list node delete

Given an in-between(any node not at the start and end of the linked list) node within a singly linear linked list, how to delete that node, when head pointer of list is not given? (13 Replies)
Discussion started by: rupeshkp728
13 Replies

7. High Performance Computing

Differential Equations

I`m having a cluster with Rocks 5.2 distribution and I want to solve differential equations and I`m interested to know if are some programs already developed to do this. (3 Replies)
Discussion started by: rapo
3 Replies

8. Programming

LInear Addresses

Hi all, Even after reading many explanation the question still haunting me what's the difference between physical and linear addresses.Can we directly access physical addresses .If not then paging circuitry would have ensure contiguous physical addresses regardless of any linear addresses but this... (2 Replies)
Discussion started by: joshighanshyam
2 Replies

9. UNIX for Dummies Questions & Answers

Can you perform mathematical equations in UNIX?

Hello one and all, I have a basic background in UNIX, but I was wondering if there is a way to perform simple mathematical equations (like multiplication, addition)? If so, is there a way to multiply values from a column by a value to produce a column with the answers? :confused: I am... (4 Replies)
Discussion started by: VioletFairy
4 Replies
Login or Register to Ask a Question