File:RubleArc.png

Inflation of rouble in the fall of 2014, data by https://www.mataf.net/en/currency/converter-RUB-USD , thick green scratched line.

The two approximations (extrapolations) are shown with black straight line and with pink arc.

This is update of image http://mizugadro.mydns.jp/t/index.php/File:Rusa2014.10.28t.jpg (the pink arc is added).

The straight black line represents the liner approximation ("500 days"), made 2014.10.27; this date is chosen as zero at the abscissa axis.

The pink arc is circular approximation, made 2014.11.29.

The two extrapolations can be interpreted as "optimistic" and "pessimistic" estimates.

The branch point of the circular approximation at the beginning of year 2015 may have sense of denomination; at such a denomination the roubles are no more accepted in the money exchange offices, and its value can be interpreted as imaginary.

2014.12.03, such a denomination indeed had been suggested by dumak Roman Hudiakov (Худяков Роман Иванович)

Data
38 2014-12-04.38  52 971.0 2014-12-03.37   54 729.00 2014-12-02.36   51 196.5 2014-12-01.35   52 329.9 2014-11-30.34   50 213.3 2014-11-29.33   50 213.29 2014-11-28.32   49 370.10 2014-11-27.31   47 359.80 2014-11-26.30   46 663.40 2014-11-25.29   45 292.32 2014-11-24.28   44 380.80 2014-11-23.27   45 772.90 2014-11-22.26   45 772.90 2014-11-21.25   45 481.20 2014-11-20.24   46 670.90 2014-11-19.23   46 965.50 2014-11-18.22   46 630.00 2014-11-17.21   47 392.50 2014-11-16.20   47 241.64 2014-11-15.29   47 346.0 2014-11-14.18   47 428.5 2014-11-13.17   46 284.5 2014-11-12.16   46 408.0 2014-11-11.15   46 143.70 2014-11-10.14   45 713.8 2014-11-09.13   46 610.9 2014-11-08.12   46 699.9 2014-11-07.11   47 937.0 2014-11-06.10   45 367.20 2014-11-05.09   44 531.6 2014-11-04.08   43 605.6 2014-11-03.07   43 359.8 2014-11-02.06   43 028.3 2014-11-01.05   43 028.3 2014-10-31.04   41 701.1 2014-10-30.03   43 388.0 2014-10-29.02   42 750.5 2014-10-28.01   42 403.5 2014-10-27.00   41 984.50 2014-10-26      41 895.20 2014-10-25      41 895.20 2014-10-24      41 926.50 2014-10-23      41 539.70 2014-10-22      41 000.30 2014-10-21      40 970.30 2014-10-20      40 934.30 2014-10-19      40 717.90 2014-10-18      40 717.90 2014-10-17      39 889.10 2014-10-16      39 889.10 2014-10-15      39 889.10 2014-10-14      39 889.10 2014-10-13      39 889.10 2014-10-12      39 889.10 2014-10-11      39 889.10 2014-10-10      39 889.10 2014-10-09      39 889.10 2014-10-08      39 889.10 2014-10-07      39 889.10 2014-10-06      39 975.10 2014-10-05      39 980.70 2014-10-04      39 571.00 2014-10-03      39 571.00 2014-10-02      39 571.00 2014-10-01      39 685.50 2014-09-30      39 431.50 2014-09-29      39 143.50 2014-09-28      39 152.70 2014-09-27      39 152.70 2014-09-26      38 494.80 2014-09-25      38 206.50 2014-09-24      38 581.00 2014-09-23      38 731.10 2014-09-22      38 432.20 2014-09-21      38 435.60 2014-09-20      38 435.60 2014-09-19      38 477.30 2014-09-18      38 432.90 2014-09-17      38 336.40 2014-09-16      38 302.80 2014-09-15      37 793.80 2014-09-14      37 785.30 2014-09-13      37 785.30 2014-09-12      37 532.40 2014-09-11      37 310.80 2014-09-10      37 093.10 2014-09-09      37 046.50 2014-09-08      36 975.80 2014-09-07      36 945.60 2014-09-06      36 945.60 2014-09-05      36 958.60 2014-09-04      36 806.70 2014-09-03      37 453.60 2014-09-02      37 328.10 2014-09-01      37 057.80 2014-08-31      37 068.00 2014-08-30      37 068.00 2014-08-29      36 754.00 2014-08-28      35 937.50 2014-08-27      36 164.90 2014-08-26      36 146.10 2014-08-25      36 141.30 2014-08-24      36 112.70 2014-08-23      36 112.70 2014-08-22      36 047.10 2014-08-21      36 367.10 2014-08-20      36 182.00 2014-08-19      36 082.10 2014-08-18      36 113.90 2014-08-17      36 127.70 2014-08-16      36 127.70 2014-08-15      36 029.60 2014-08-14      36 043.80 2014-08-13      36 213.10 2014-08-12      35 947.10 2014-08-11      36 148.90 2014-08-10      36 149.10 2014-08-09      36 149.10 2014-08-08      36 361.00 2014-08-07      36 174.10 2014-08-06      36 100.30 2014-08-05      35 831.90 2014-08-04      35 761.40 2014-08-03      35 753.90 2014-08-02      35 753.90 2014-08-01      35 728.90 2014-07-31      35 558.70 2014-07-30      35 813.00 2014-07-29      35 559.30 2014-07-28      35 115.30 2014-07-27      35 128.60 2014-07-26      35 128.60 2014-07-25      35 083.80 2014-07-24      34 879.80 2014-07-23      34 984.80 2014-07-22      35 170.30 2014-07-21      35 317.80 2014-07-20      35 317.80 2014-07-19      35 158.60 2014-07-18      35 266.00 2014-07-17      34 486.00 2014-07-16      34 399.30 2014-07-15      34 344.90 2014-07-14      34 199.50 2014-07-13      34 116.30 2014-07-12      34 116.30 2014-07-11      34 012.70 2014-07-10      33 918.00 2014-07-09      34 231.20 2014-07-08      34 432.30 2014-07-07      34 387.40 2014-07-06      34 404.20 2014-07-05      34 404.20 2014-07-04      34 305.50 2014-07-03      34 304.00 2014-07-02      34 355.00 2014-07-01      33 985.80 2014-06-30      33 722.00 2014-06-29      33 744.70 2014-06-28      33 744.70 2014-06-27      33 742.80 2014-06-26      33 634.60 2014-06-25      33 737.20 2014-06-24      33 791.70 2014-06-23      34 091.20 2014-06-22      34 462.20 2014-06-21      34 462.20 2014-06-20      34 475.00 2014-06-19      34 416.90 2014-06-18      34 455.40 2014-06-17      34 811.00 2014-06-16      34 602.60 2014-06-15      34 394.80 2014-06-14      34 394.80 2014-06-13      34 390.20 2014-06-12      34 344.60 2014-06-11      34 354.90 2014-06-10      34 289.80 2014-06-09      34 336.40 2014-06-08      34 409.70 2014-06-07      34 409.70 2014-06-06      34 407.30 2014-06-05      34 694.70 2014-06-04      34 970.60 2014-06-03      35 075.60 2014-06-02      35 043.00 2014-06-01      34 891.40 2014-05-31      34 891.40

The maximum was reached on 27 Oct 2014 1 000.00 US Dollar = 41 984.50 Russian Ruble The minimum on 22 Feb 2009 1 000.00 US Dollar = 27.60 Russian Ruble https://www.mataf.net/en/currency/converter-USD-RUB

C++ generator of curves
FILE *i,*o; int main{ int j,n,m,N=200; char d[N][16]; DB f[N]; int di; DB dr; int day; //i=fopen("rusa2014.10.29.txt","r"); i=fopen("dollardata.txt","r"); //i=fopen("04.txt","r"); fscanf(i,"%d",&day);
 * 1) include
 * 2) include
 * 3) include
 * 4) define DB double
 * 5) define DO(x,y) for(x=0;x<y;x++)
 * 6) include"ado.cin"

DO(n,N) { j=fscanf(i,"%s%d%lf",d[n],&di,&dr); if(j<3) goto end; f[n]=di+.001*dr; printf("%1d %3d %s %2d %8.3lf %4d %6.4lf %6.4lf\n",j,n,d[n],di,dr,day-n,f[n],1000./f[n]); } end: N=n; fclose(i);

//o=fopen("05.eps","w"); //o=fopen("rusa2014m10m29.eps","w"); o=fopen("dollarplot.eps","w"); ado(o,720,320); fprintf(o,"210 10 translate 10 10 scale\n"); for(n=0;n<31;n+=10) {M(-20,n)L(50,n)} for(n=-20;n<51;n+=10) {M(n,0)L(n,30)} fprintf(o,"0 0 0 RGB 2 setlinecap .1 W S\n"); //M(-20,0) L(50,0) M(0,-0.2) L(0,30) fprintf(o,"0 0 0 RGB .16 W S\n"); DB x,y; //DO(n,m){x=-X[n]/2.4; y=1000./f[n]; if(n==0) M(x,y) else L(x,y) } DO(n,N){x=(day-n)/10.; y=1000./f[n]; if(n==0) M(x,y) else L(x,y) } fprintf(o,"0 1 0 RGB 1 setlinejoin 1 setlinecap 1 W S\n");
 * 1) define M(x,y) fprintf(o,"%6.4f %6.4f M\n",0.+x,0.+y);
 * 2) define L(x,y) fprintf(o,"%6.4f %6.4f L\n",0.+x,0.+y);

M(-12,30) L(50,0) fprintf(o,"0 0 0 RGB .2 W S\n");

fprintf(o,"showpage\n%c%cTrailer",'%','%'); fclose(o); system("epstopdf dollarplot.eps"); system(   "open dollarplot.pdf"); printf("day of observaiton: %3d\n", day); //     getchar; system("killall Preview");//for mac }

Latex generator of the arc and labels
\documentclass[12pt]{article} \usepackage{geometry} \usepackage{graphicx} \usepackage{rotating} \usepackage{color} \definecolor{pink}{RGB}{255,127,255} \paperwidth 732pt \paperheight 332pt \textwidth 800pt \textheight 400pt \topmargin -92pt \oddsidemargin -84pt \newcommand \sx {\scalebox} \newcommand \rot {\begin{rotate}} \newcommand \ero {\end{rotate}} \begin{document} \begin{picture}(730,306) \put(46,20){\sx{14.9}{\color{pink} \circle{50}}} %\put(10,10){\includegraphics{rusa2014.10.28c}} \put(10,10){\includegraphics{dollarplot}} %\put(10,10){\includegraphics{rusa2014.10.28c}} %\put(10,10){\includegraphics{05.pdf}} %\put(-10,0){\circle(200)} %\put(0,-40){\sx{16}{\color{magenta} \circle{50}}} \put(-4,308){\sx{1.3}{Ruble}} \put(-4,296){\sx{1.3}{in cents}} \put(-4,282){\sx{1.3}{of USA}} \put(0,210){\sx{2.5}{2}} \put(0,110){\sx{2.5}{1}} \put(0,10){\sx{2.5}{0}} \put(80,-4){\sx{2.5}{$-100$}} \put(214,-4){\sx{2.5}{$0$}} \put(300,-4){\sx{2.5}{$100$}} \put(400,-4){\sx{2.5}{$200$}} \put(500,-4){\sx{2.5}{$300$}} %\put(600,-2){\sx{2.5}{$400$}} \put(640,-3){\sx{2.5}{$t$, days}} \put(86,30){\sx{2.4}{\rot{90}{\bf 2014.05.31}\ero}} \put(130,30){\sx{2.4}{\rot{90}{\bf 2014.07.19}\ero}} \put(230,30){\sx{2.4}{\rot{90}{\bf 2014.10.27}\ero}} \put(330,30){\sx{2.4}{\rot{90}{\bf 2015.02.04}\ero}} \put(430,172){\sx{2.4}{\rot{90}{\bf 2015.05.15}\ero}} \put(530,172){\sx{2.4}{\rot{90}{\bf 2015.08.23}\ero}} \put(630,172){\sx{2.4}{\rot{90}{\bf 2015.12.01}\ero}} \put(730,172){\sx{2.4}{\rot{90}{\bf 2016.03.10}\ero}} \end{picture} \end{document}

More references
2014.09.20. http://lenta.ru/articles/2014/09/19/lavrov/ Возвращение в Африку. О чем договорился Сергей Лавров во время визита в Зимбабве и Эфиопию. 13:17, 20 сентября 2014

2014.12.01. https://www.youtube.com/watch?v=TXFber3bRGM Что будет с рублем, финансовая грамотность "первого канала". Dec 1, 2014. ".. Мы прийдем к дефолту 1991 года.."