Wie organisiert man das Ergebnis von X- und Y-Koordinaten als ASCII-X-Y-Plot?

Question

Ich mache eine frühere Aufgabe in C++ und versuche herauszufinden, wie man das richtige ASCII X-Y Diagramm erhält.

Also was wirklich passiert, ist, dass Benutzer ein Menü erhalten, das ihnen erlaubt, eine bestimmte trig Funktion zu wählen. Alle Funktionen haben einen Bereich zwischen [-4..6] für X und [-12 ... 5] für Y.Next Benutzer wird erlaubt, die Menge der Abstufungen (oder Werte zwischen den eingeschränkten x und y-Bereich) zu wählen, und wenn sie resultierende Werte oder Bitmap sehen wollen.Die endgültige Ausgabe wird in Werten/Bitmap sein. Ich habe Wolfram alpha eingefügt Link für die Funktionen in den Kommentaren

Was ich getan habe, ist jede Spalte in 2D-Ausgabe um Produkt von 1/(Graduierung-1) erhöht (dh 1/3, wenn der Wert 4 ist) und Spalte # .Einmal dieses Produkt erreicht 1, ich bekomme keine korrekte output für die Werte

#include <iostream> 
#include <cmath> 


using namespace std; 


double minX=-4; 
double maxX=6; 
double minY=-12; 
double maxY=5; 



void displayValues(double result[],int result_size,int graduationVal,double percentIncrease,int menuSelection){ 

    int displaySelection=0; 
    cerr<<"(0) Bitmap or (1) Values?"; 
    cin>>displaySelection; 
    int k=0; 
    int i=0; 
    int division=0; 

    //Add Values into array until result-1 values 
    while(i < result_size){ 
     //cout<<"Before j"; 
     //Calculate all the horizontal axis values 
for(int j=0; j< graduationVal;j++){ 

     if(displaySelection==1){ 

      //cout<<"In if"; 
      if(menuSelection==1){ 
       result[i]=sin(minX+(percentIncrease*j))*cos(minY+(percentIncrease*k)); 
       cout<<"\n Increase in value of x by "<<percentIncrease*j<<" "; 
       cout<<"Increase in value of y by "<<percentIncrease*k<<"\n"; 
       //cout<<sin(minX+(percentIncrease*j))<<"\n"; 
       //cout<<cos(minY+(percentIncrease*k))<<"\n"; 
       cout<<result[i]<<" "; 
      }else if(menuSelection==2){ 
       result[i]=sin(minX+(percentIncrease*j))+pow(cos(minY+(percentIncrease*j)),2)-(minX+(percentIncrease*j))/(minY+(percentIncrease*k)); 
       cout<<"\n Increase in value of x by "<<percentIncrease*j<<" "; 
       cout<<"Increase in value of y by "<<percentIncrease*k<<"\n"; 

       cout<<result[i]<<" "; 

      }else if(menuSelection==3){ 

       result[i]=(0.5 * sin(minX+(percentIncrease*j)))+(0.5 *cos(minY+(percentIncrease*k))); 
       cout<<"\n Increase in value of x by "<<percentIncrease*j<<" "; 
       cout<<"Increase in value of y by "<<percentIncrease*k<<"\n"; 

       cout<<result[i]<<" "; 


      }else if(menuSelection==4){ 

       result[i]=(0.5 * sin(minX+(percentIncrease*j)))+(minX+(percentIncrease*j)) * cos(3 * (minY+(percentIncrease*k))); 
       cout<<result[i]<<" "; 

      } 

      //cout<<"J is"<<j<<"\n"; 
      //cout<<"K is"<<k<<"\n"; 
      //cout<<"I is"<<i<<"\n"; 
     }else{ 

      if(menuSelection==1){ 
       result[i]=sin(minX+(percentIncrease*j))*cos(minY+(percentIncrease*k)); 
       cout<<((result[i] > 0)?"O":"X"); 

      }else if(menuSelection==2){ 

       result[i]=sin(minX+(percentIncrease*j))+pow(cos(minY+(percentIncrease*j)),2)-(minX+(percentIncrease*j))/(minY+(percentIncrease*k)); 
       cout<<((result[i] > 0)?"O":"X"); 

      }else if(menuSelection==3){ 

       result[i]=(0.5 * sin(minX+(percentIncrease*j)))+(0.5 *cos(minY+(percentIncrease*k))); 
       cout<<((result[i] > 0)?"O":"X"); 


      }else if(menuSelection==4){ 

       result[i]=(0.5 * sin(minX+(percentIncrease*j)))+(minX+(percentIncrease*j)) * cos(3 * (minY+(percentIncrease*k)));  
       cout<<((result[i] > 0)?"O":"X"); 

       } 


     }//End display choice if 


     //Increment Array Index 
     i++; 
     //cout<<"Bottom of j"; 
    }//End of j loop 

cout<<"\n"; 

//Increment y-values 
if(k<graduationVal){ 

    k++; 
    } 

    }//End of While 

} 


int main(){ 

    int menuChoice=-1; 
    int displaychoice=0; 

    double distanceFromMinMaxX=4+6; 
    double distanceFromMinMaxY=12+5; 

    int graduations=0; 

    // double precisionX; 
    // double precisionY; 

    double pctIncrease; 

    while(menuChoice!=0){ 

     cerr<<"Select your function\n"; 
     cerr<<"1. sin(x)cos(y)\n"; 
     cerr<<"2. sin(x)+cos^2(x)-x/y\n"; 
     cerr<<"3. 1/2 sin(x) + 1/2 cos(y)\n"; 
     cerr<<"4. 1/2 sin(x) + xcos(3y)\n"; 
     cerr<<"0. Quit\n"; 
     cin>>menuChoice; 

     if(menuChoice == 0){ 

     return 0; 
     } 

     cerr<<"Number of graduations per axis: "; 
     cin>>graduations; 

     pctIncrease=1/(double)(graduations - 1); 
     int values_size=graduations * graduations; 

     double values[values_size]; 


     /*int yValues[graduationVal];*/ 

    // precisionX=distanceFromMinMaxX/graduations; 
    // precisionY=distanceFromMinMaxY/graduations; 


     displayValues(values,values_size,graduations,pctIncrease,menuChoice); 


    } 

} 

Edit:

#include <iostream> 
    #include <cmath> 
    using namespace std; 
    double minX=-4; 
    double maxX=6; 
    double minY=-12; 
    double maxY=5; 


double* calculateValues(double val[],int val_size,int graduationVal,double xPrecision,double yPrecision,int menuSelection){ 

    /*int displaySelection=0; 
    cerr<<"(0) Bitmap or (1) Values?"; 
    cin>>displaySelection;*/ 

    int k=0; 
    int i=0; 

    //Add Values into array until result-1 values 
    while(i < val_size){ 
    for(int j=0; j<graduationVal;j++){ 
       if(menuSelection==1){ 
        val[i]=sin(minX+(xPrecision*j))*cos(minY+(yPrecision*k)); 

       }else if(menuSelection==2){ 
        val[i]=sin(minX+(xPrecision*j))+pow(cos(minY+(xPrecision*j)),2)-(minX+(xPrecision*j))/(minY+(yPrecision*k)); 

       }else if(menuSelection==3){ 

        val[i]=(0.5 * sin(minX+(xPrecision*j)))+(0.5 *cos(minY+(yPrecision*k))); 

       }else if(menuSelection==4){ 

        val[i]=(0.5 * sin(minX+(xPrecision*j)))+(minX+(xPrecision*j)) * cos(3 * (minY+(yPrecision*k))); 

       }  

      //Increment Array Index 
      i++; 
    }//End of j loop 



    //Increment y-values 
    if(k<graduationVal){ 

     k++; 
    } 

}//End of While 
return val; 
} 

void displayValues(double result[],int result_size,int numOfGraduations){ 

    int displaySelection=0; 
    cerr<<"(0) Bitmap or (1) Values?"; 
    cin>>displaySelection; 

    int k=0; 
    int i=0; 


    while(i< result_size){ 


    for(int j=0;j<numOfGraduations;j++){ 

     if(displaySelection==1){ 
     cout<<result[i]<<" "; 
     }else{ 

     cout<<((result[i] > 0)?"O":"X"); 

     } 

     i++; 
    } 

    cout<<"\n"; 

    } 

} 


int main(){ 

int menuChoice=-1; 
int displaychoice=0; 

double distanceFromMinMaxX=4+6; 
double distanceFromMinMaxY=12+5; 

int graduations=0; 

double precisionX; 
double precisionY; 

double pctIncrease; 

    while(menuChoice!=0){ 

      cerr<<"Select your function\n"; 
      cerr<<"1. sin(x)cos(y)\n"; 
      cerr<<"2. sin(x)+cos^2(x)-x/y\n"; 
      cerr<<"3. 1/2 sin(x) + 1/2 cos(y)\n"; 
      cerr<<"4. 1/2 sin(x) + xcos(3y)\n"; 
      cerr<<"0. Quit\n"; 
      cin>>menuChoice; 

      if(menuChoice == 0){ 

      return 0; 
      } 

      cerr<<"Number of graduations per axis: "; 
      cin>>graduations; 

      pctIncrease=1/(double)(graduations - 1); 
      int values_size=graduations * graduations; 

      double values[values_size]; 


      /*int yValues[graduationVal];*/ 

      precisionX=distanceFromMinMaxX/graduations; 
      precisionY=distanceFromMinMaxY/graduations; 

      /*cout << "# of graduations: " << graduations << endl; 
      cout << "Precision: "<< endl; 
      cout << "x: " << precisionX << endl; 
      cout << "y: " << precisionY << endl;*/ 

      calculateValues(values,values_size,graduations,precisionX,precisionY,menuChoice); 
      displayValues(values,values_size,graduations); 




    } 

} 

Edit: Ich benutze gcc

Answer 1

Dies erzeugt eine Ausgabe ähnlich der screencap Sie verbunden sind (in dem der Benutzer wählte Option 2). Die Funktion TextPlot2d nimmt einen Lambda oder Funktor, der die gewünschte Funktion berechnet, sowie zwei Strukturen, um festzulegen, wie die x- und y-Achsen skaliert werden sollen. Ich habe auch verschiedene Ausgabezeichen verwendet, weil ich es schwer hatte, "X" gegen "O" zu unterscheiden.

#include <iostream> 
#include <cmath> 

struct PlotRange { 
    double begin, end, count; 
    double get_step() const { return (end - begin)/count; } 
}; 

template <typename F> 
void TextPlot2d(F func, PlotRange range_x, PlotRange range_y) { 
    const auto step_x = range_x.get_step(); 
    const auto step_y = range_y.get_step(); 
    // multiply steps by iterated integer 
    // to avoid accumulation of error in x and y 
    for(int j = 0;; ++j) { 
     auto y = range_y.begin + step_y * j; 
     if(y >= range_y.end) break; 
     for(int i = 0;; ++i) { 
      auto x = range_x.begin + step_x * i; 
      if(x >= range_x.end) break; 
      auto z = func(x, y); 
      if(z != z) { std::cout << '?'; } // NaN outputs a '?' 
      else  { std::cout << (z < 0 ? '#':'o'); } 
     } 
     std::cout << '\n'; 
    } 
} 

int main() { 
    TextPlot2d(
     [](double x, double y){ return std::sin(x) + std::cos(y/2)*std::cos(y/2) - x/y; }, 
     {-4.0, 6.0, 40.0}, 
     {-12.0, 5.0, 40.0} 
    ); 
} 

Tada!

Answer 2

Endlich habe ich die Ausgabe !! Scheinbar Funktion # 2 war falsch und deshalb bekam ich keine richtige Antwort.

#include <iostream> 
    #include <cmath> 
    using namespace std; 
    double minX=-4; 
    double maxX=6; 
    double minY=-12; 
    double maxY=5; 


    void calculateValues(double val[],int val_size,int graduationVal,double xPrecision,double yPrecision,int menuSelection){ 

     /*int displaySelection=0; 
     cerr<<"(0) Bitmap or (1) Values?"; 
     cin>>displaySelection;*/ 

     //double val[]; 
     int k=0; 
     int i=0; 

     //Add Values into array until result-1 values 
     while(i < val_size){ 


     for(int j=0; j<graduationVal;j++){ 
        if(menuSelection==1){ 
         val[i]=sin(minX+(xPrecision*j))*cos(minY+(yPrecision*k)); 

        }else if(menuSelection==2){ 
         val[i]=sin(minX+(xPrecision*j))+pow(cos((minY+(yPrecision*k))/2),2)-(minX+(xPrecision*j))/(minY+(yPrecision*k)); 

        }else if(menuSelection==3){ 

         val[i]=(0.5 * sin(minX+(xPrecision*j)))+(0.5 *cos(minY+(yPrecision*k))); 

        }else if(menuSelection==4){ 

         val[i]=(0.5 * sin(minX+(xPrecision*j)))+(minX+(xPrecision*j)) * cos(3 * (minY+(yPrecision*k))); 

        }  

       //Go to next value in array 
       i++; 
     }//End of j loop 



     //Increment y-values 
     if(k<graduationVal){ 

      k++; 
     } 

    }//End of While 
     } 

    void displayValues(double result[],int result_size,int numOfGraduations){ 

     int displaySelection=0; 
     cerr<<"(0) Bitmap or (1) Values?"; 
     cin>>displaySelection; 

     int k=0; 
     int i=0; 


     while(i< result_size){ 


     for(int j=0;j<numOfGraduations;j++){ 

      if(displaySelection==1){ 
      cout<<result[i]<<" "; 
      }else{ 

      cout<<((result[i] > 0)?"O":"#"); 

      } 

      i++; 
     } 

     cout<<"\n"; 

     } 

    } 


    int main(){ 

    int menuChoice=-1; 
    int displaychoice=0; 

    double distanceFromMinMaxX=maxX-minX; 
    double distanceFromMinMaxY=maxY-minY; 

    int graduations=0; 

    double precisionX; 
    double precisionY; 

    double pctIncrease; 

     while(menuChoice!=0){ 

       cerr<<"Select your function\n"; 
       cerr<<"1. sin(x)cos(y)\n"; 
       cerr<<"2. sin(x)+cos^2(y/2)-x/y\n"; 
       cerr<<"3. 1/2 sin(x) + 1/2 cos(y)\n"; 
       cerr<<"4. 1/2 sin(x) + xcos(3y)\n"; 
       cerr<<"0. Quit\n"; 
       cin>>menuChoice; 

       if(menuChoice == 0){ 

       return 0; 
       } 

       cerr<<"Number of graduations per axis: "; 
       cin>>graduations; 

       //pctIncrease=1/(double)(graduations - 1); 
       int values_size=graduations * graduations; 

       double values[values_size]; 


       /*int yValues[graduationVal];*/ 

       precisionX=(distanceFromMinMaxX)/graduations; 
       precisionY=(distanceFromMinMaxY)/graduations; 

       /*cout << "# of graduations: " << graduations << endl; 
       cout << "Precision: "<< endl; 
       cout << "x: " << precisionX << endl; 
       cout << "y: " << precisionY << endl;*/ 

       calculateValues(values,values_size,graduations,precisionX,precisionY,menuChoice); 
       displayValues(values,values_size,graduations); 




     } 

    }