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Get formatted equations from LP/MPS file


Get formatted equations from LP/MPS file

By : alshaiji
Date : November 22 2020, 02:59 PM
it fixes the issue See https://cs.stackexchange.com/questions/48510/help-wrapping-my-head-around-a-combinatorial-optimization-problem/50179#50179 for an example of a LaTeX representation of a GAMS model. I think with LP/MPS files you have lost too much structure and context. It would be very difficult to recover the original equations that formed these files. Almost like recovering the original C code from a .exe file.
code :


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How to rescale equations formatted using 'align'? Resizebox doesn't appear to work

How to rescale equations formatted using 'align'? Resizebox doesn't appear to work


By : Muhammad Usman
Date : March 29 2020, 07:55 AM
I hope this helps you . It seems that scalebox doesn't work well with math mode. A possible solution is to put your align inside a minipage:
code :
\documentclass[10pt, oneside, twocolumn, notitlepage]{book}
\usepackage{amsthm,latexsym,amssymb,amsmath, amsfonts}
\usepackage{graphicx}
\usepackage{lipsum}

\newtheorem{thm}{Theorem}[section]


\newtheorem{rem}[thm]{Remark}

\begin{document}
\lipsum[1]

\resizebox{.9\linewidth}{!}{
  \begin{minipage}{\linewidth}
  \begin{align*}
\mathrm{Term_{2a}} &=\iint  \left[\nabla \phi_t(x) \cdot \nabla \phi(y) + \nabla \phi(x) \cdot \nabla \phi_t(y) \right]\  e^{-\frac{\|x-y\|^2}{d^2}} W_{l}(\phi(x))W_{l}(\phi(y)) \mathrm{\ dx \ dy} \\
&=\iint  \nabla \phi_t(x) \cdot \nabla \phi(y)  e^{-\frac{\|x-y\|^2}{d^2}} W_{l}(\phi(x))W_{l}(\phi(y)) \mathrm{\ dx \ dy} \\
\end{align*}
  \end{minipage}
}

\lipsum
\end{document}
Solving Non-linear System of 3 differentail equations(Lorenz equations) using ode solve: ode23s in Matlab

Solving Non-linear System of 3 differentail equations(Lorenz equations) using ode solve: ode23s in Matlab


By : Raffy Sueno
Date : March 29 2020, 07:55 AM
around this issue I am trying to solve 3 differentail equations(Lorenz equations) using ode solver: ode23s in Matlab. Here are the 3 lorenz equations: , Your function is incorrect as far as I can see. This line:
code :
xprime=[ alpha*I*(1-c) + c*(- k_f - k_d - k_n * s - k_p*(1-q)); lambda_b * c* P_C - lambda_r *(1-q)*s;   k_p * c *(P_C / P_Q)- gamma * q];
xprime=[ alpha*I*(1-x(1)) + x(1)*(- k_f - k_d - k_n * x(2) - k_p*(1-x(3))); lambda_b * x(1)* P_C - lambda_r *(1-x(3))*x(2);   k_p * x(1) *(P_C / P_Q)- gamma * x(3)];
%initial vectors
  c=0.25; 
  s=0.02;
  q=0.02; 
Copy from Json.Serde formatted table into a text file formatted hive table

Copy from Json.Serde formatted table into a text file formatted hive table


By : Alex Pechler
Date : March 29 2020, 07:55 AM
I hope this helps you . After an hour of searching and trying I was able to do it myself. Below is the script
code :
INSERT INTO TABLE JsonTable 
select cols.start_date,cols.end_date,cols.measures.Visitors,
cols.measures.Singlepagevisits
FROM JsonTable_raw jt lateral view explode(jt.data) collection as cols;
System of equations. Displaying following equations in a bracket and automatically printing results attached to the vari

System of equations. Displaying following equations in a bracket and automatically printing results attached to the vari


By : Dinesh Reddy
Date : March 29 2020, 07:55 AM
like below fixes the issue I made a function which does all of your work and adds a version of your requested output.
The first answer is not as clean as you requested, but I hope this leads you in the right direction.
code :
    your_requested_output<-function() {
      answer<-vector()
      my_string<-"2x+5y-2z+2p=9; 3x-2y+1z-3p=34; -3x+3y+2z+4p=33; 2x+3y+4z+5p=125"
sp1 <- unlist(strsplit(my_string, ";"))
sp1
sp2 <- strsplit(sp1, "=")
sp2
      my_string<-gsub("x","a",my_string)
      my_string<-gsub("y","b",my_string)
      my_string<-gsub("z","c",my_string)
      my_string<-gsub("p","d",my_string)
      my_string<-strsplit(my_string, ";")
      my_string<-unlist(my_string)
      my_string<-trimws(my_string)
      for (i in 1:4) {
        print(paste0(my_string[i]))
      }
      b <- as.numeric(sapply(sp2, '[[', 2))
      sp3 <- lapply(lapply(sp2, '[[', 1), function(s) gsub("([-+])([[:alpha:]])", "\\11\\2", s))
      sp3 <- lapply(sp3, trimws)
      sp3 <- lapply(sp3, function(s1) sub("^([[:alpha:]])", "1\\1", s1))
      A <- do.call(rbind, lapply(sp3, function(x) as.numeric(unlist(strsplit(x,"[[:alpha:]]")))))
      p <- nrow(A)
      (U.pls <- cbind(A,b))
      U.pls[1,] <- U.pls[1,]/U.pls[1,1]
      i <- 2
      while (i < p+1) {
        j <- i
        while (j < p+1) {
          U.pls[j, ] <- U.pls[j, ] - U.pls[i-1, ] * U.pls[j, i-1]
          j <- j+1
        }
      while (U.pls[i,i] == 0) {
        U.pls <- rbind(U.pls[-i,],U.pls[i,])
      }
      U.pls[i,] <- U.pls[i,]/U.pls[i,i]
      i <- i+1
    }

    for (i in p:2){
      for (j in i:2-1) {
        U.pls[j, ] <- U.pls[j, ] - U.pls[i, ] * U.pls[j, i]
        U.pls[j, ] - U.pls[i, ] * U.pls[j, i]
      }
    }
    answer<-c(answer, paste0(letters[1:4],"=",U.pls[,p+1]))
    return(answer)
    }
    your_requested_output()
How to write an Excel file with a formatted date in the header, and formatted columns?

How to write an Excel file with a formatted date in the header, and formatted columns?


By : Edward
Date : March 29 2020, 07:55 AM
will help you I want to export a dataset into an Excel file from SAS, like shown below: , Title with today's Date in Month Name - Year format:
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