function Archives » 100% Best Unlimited Private Proxies: Fast, Cheap and Secure

Why the PercenForm for the y-axis Ticks in Plot function cannot work when specify Frame->True?

I am trying to plot the y-axis value as a percent form. By using PercentForm for the Ticks which I followed Changing tick labels to percent, I can plot the y-axis in percent. However, this approach only works when I do not specify the "Frame->True".Can anybody explain this to me? Thanks

plotting – Which function should I use to spherically 3D plot an interpolation function of two variables

I have a dataset in the form:

valuesfitC12 = {{{-180, 0}, 21.14`}, {{-180, 5}, 21.29`}, {{-180, 10},
     21.44`}, {{-180, 20}, 21.74`}, {{-180, 30}, 21.84`}, {{-170, 0}, 
    21.14`}, {{-170, 5}, 21.34`}, {{-170, 10}, 21.44`}, {{-170, 20}, 
    21.69`}, {{-170, 30}, 21.79`}, {{-160, 0}, 21.14`}, {{-160, 5}, 
    21.34`}, {{-160, 10}, 21.39`}, {{-160, 20}, 21.74`}, {{-160, 30}, 
    21.84`}, {{-150, 0}, 21.14`}, {{-150, 5}, 21.34`}, {{-150, 10}, 
    21.44`}, {{-150, 20}, 21.69`}, {{-150, 30}, 21.79`}, {{-140, 0}, 
    21.14`}, {{-140, 5}, 21.29`}, {{-140, 10}, 21.49`}, {{-140, 20}, 
    21.69`}, {{-140, 30}, 21.69`}, {{-130, 0}, 21.14`}, {{-130, 5}, 
    21.34`}, {{-130, 10}, 21.39`}, {{-130, 20}, 21.74`}, {{-130, 30}, 
    21.84`}, {{-120, 0}, 21.14`}, {{-120, 5}, 21.29`}, {{-120, 10}, 
    21.44`}, {{-120, 20}, 21.74`}, {{-120, 30}, 21.84`}, {{-110, 0}, 
    21.14`}, {{-110, 5}, 21.34`}, {{-110, 10}, 21.44`}, {{-110, 20}, 
    21.69`}, {{-110, 30}, 21.79`}, {{-100, 0}, 21.14`}, {{-100, 5}, 
    21.34`}, {{-100, 10}, 21.39`}, {{-100, 20}, 21.74`}, {{-100, 30}, 
    21.84`}, {{-90, 0}, 21.14`}, {{-90, 5}, 21.34`}, {{-90, 10}, 
    21.44`}, {{-90, 20}, 21.69`}, {{-90, 30}, 21.79`}, {{-80, 0}, 
    21.14`}, {{-80, 5}, 21.29`}, {{-80, 10}, 21.49`}, {{-80, 20}, 
    21.69`}, {{-80, 30}, 21.69`}, {{-70, 0}, 21.14`}, {{-70, 5}, 
    21.34`}, {{-70, 10}, 21.39`}, {{-70, 20}, 21.74`}, {{-70, 30}, 
    21.84`}, {{-60, 0}, 21.14`}, {{-60, 5}, 21.29`}, {{-60, 10}, 
    21.44`}, {{-60, 20}, 21.74`}, {{-60, 30}, 21.84`}, {{-50, 0}, 
    21.14`}, {{-50, 5}, 21.34`}, {{-50, 10}, 21.44`}, {{-50, 20}, 
    21.69`}, {{-50, 30}, 21.79`}, {{-40, 0}, 21.14`}, {{-40, 5}, 
    21.34`}, {{-40, 10}, 21.39`}, {{-40, 20}, 21.74`}, {{-40, 30}, 
    21.84`}, {{-30, 0}, 21.14`}, {{-30, 5}, 21.34`}, {{-30, 10}, 
    21.44`}, {{-30, 20}, 21.69`}, {{-30, 30}, 21.79`}, {{-20, 0}, 
    21.14`}, {{-20, 5}, 21.29`}, {{-20, 10}, 21.49`}, {{-20, 20}, 
    21.69`}, {{-20, 30}, 21.69`}, {{-10, 0}, 21.14`}, {{-10, 5}, 
    21.34`}, {{-10, 10}, 21.39`}, {{-10, 20}, 21.74`}, {{-10, 30}, 
    21.84`}, {{0, 0}, 21.14`}, {{0, 5}, 21.29`}, {{0, 10}, 
    21.44`}, {{0, 20}, 21.74`}, {{0, 30}, 21.84`}, {{10, 0}, 
    21.14`}, {{10, 5}, 21.34`}, {{10, 10}, 21.44`}, {{10, 20}, 
    21.69`}, {{10, 30}, 21.79`}, {{20, 0}, 21.14`}, {{20, 5}, 
    21.34`}, {{20, 10}, 21.39`}, {{20, 20}, 21.74`}, {{20, 30}, 
    21.84`}, {{30, 0}, 21.14`}, {{30, 5}, 21.34`}, {{30, 10}, 
    21.44`}, {{30, 20}, 21.69`}, {{30, 30}, 21.79`}, {{40, 0}, 
    21.14`}, {{40, 5}, 21.29`}, {{40, 10}, 21.49`}, {{40, 20}, 
    21.69`}, {{40, 30}, 21.69`}, {{50, 0}, 21.14`}, {{50, 5}, 
    21.34`}, {{50, 10}, 21.39`}, {{50, 20}, 21.74`}, {{50, 30}, 
    21.84`}, {{60, 0}, 21.14`}, {{60, 5}, 21.29`}, {{60, 10}, 
    21.44`}, {{60, 20}, 21.74`}, {{60, 30}, 21.84`}, {{70, 0}, 
    21.14`}, {{70, 5}, 21.34`}, {{70, 10}, 21.44`}, {{70, 20}, 
    21.69`}, {{70, 30}, 21.79`}, {{80, 0}, 21.14`}, {{80, 5}, 
    21.34`}, {{80, 10}, 21.39`}, {{80, 20}, 21.74`}, {{80, 30}, 
    21.84`}, {{90, 0}, 21.14`}, {{90, 5}, 21.34`}, {{90, 10}, 
    21.44`}, {{90, 20}, 21.69`}, {{90, 30}, 21.79`}, {{100, 0}, 
    21.14`}, {{100, 5}, 21.29`}, {{100, 10}, 21.49`}, {{100, 20}, 
    21.69`}, {{100, 30}, 21.69`}, {{110, 0}, 21.14`}, {{110, 5}, 
    21.34`}, {{110, 10}, 21.39`}, {{110, 20}, 21.74`}, {{110, 30}, 
    21.84`}, {{120, 0}, 21.14`}, {{120, 5}, 21.29`}, {{120, 10}, 
    21.44`}, {{120, 20}, 21.74`}, {{120, 30}, 21.84`}, {{130, 0}, 
    21.14`}, {{130, 5}, 21.34`}, {{130, 10}, 21.44`}, {{130, 20}, 
    21.69`}, {{130, 30}, 21.79`}, {{140, 0}, 21.14`}, {{140, 5}, 
    21.34`}, {{140, 10}, 21.39`}, {{140, 20}, 21.74`}, {{140, 30}, 
    21.84`}, {{150, 0}, 21.14`}, {{150, 5}, 21.34`}, {{150, 10}, 
    21.44`}, {{150, 20}, 21.69`}, {{150, 30}, 21.79`}, {{160, 0}, 
    21.14`}, {{160, 5}, 21.29`}, {{160, 10}, 21.49`}, {{160, 20}, 
    21.69`}, {{160, 30}, 21.69`}, {{170, 0}, 21.14`}, {{170, 5}, 
    21.34`}, {{170, 10}, 21.39`}, {{170, 20}, 21.74`}, {{170, 30}, 
    21.84`}, {{180, 0}, 21.14`}, {{180, 5}, 21.29`}, {{180, 10}, 
    21.44`}, {{180, 20}, 21.74`}, {{180, 30}, 21.84`}};

… and I’m creating a interpolation function the following way:

newvalfit = 
 Partition(
  Riffle(Reverse(valuesfitC12((All, 1))*Pi/180, 2), 
   valuesfitC12((All, 2))), 2); (*convert to radian*)
f =  Interpolation(newvalfit)

… which gives me an interpolation function of form f(theta,phi).

I can’t seem to find a way how get a spherical plot by limiting theta=(0,Pi/6) and phi(-Pi,Pi) since every other value of the function is extrapolated and I can’t use. I’ve tried this but the ranges are totally off, even though I explicitly set them:

SphericalPlot3D(f(theta, phi), {theta, 0, Pi/6}, {phi, -Pi, Pi}, 
 BoxRatios -> {1, 1, 0.5})

spherical plot3d of interpolation function

Also my function values should only lie between {21.14 , 21.84} but that doesn’t seem to be the case. Is there another way to plot it? What am I doing wrong? Many thanks in advance!

Dictionary file to read from javascript function

I’m trying to implement an application in js. As an input, I’ll have a brief text and I’d like to compare some words from this text with a dictionary I still have to make.

For example, if I have in the input the word “greater” I would like to look in the dictionary if there are any key that has it. But, in the dictionary I’d like to have more than 1 value for each key.

Do you know guys how it would be the best way to implement this?

How to make DSolve express constants in terms of the unknown function

If I do

DSolve[y'[x] == y[x], y[x], x]

Mathematica returns

{{y[x] -> E^x C[1]}}

Is there a way to have it return this instead?

{{y[x] -> E^x y[0]}}

use of an uninitialized value in a function in c++

I’m studying the code for a calculator from here: https://github.com/dlasalle/wx-calc

 bool m_decimal;

 template<int NUM>
 void WxCalcWindow::onNumButton( wxCommandEvent&)
   {
      m_entryMode = true;

       // accumulate number
   if (!m_decimal) {
    m_preDecimal += std::to_string(NUM);
   } else { 
     m_postDecimal += std::to_string(NUM);
   }

As far as I know, m_decimal is undefined, ie contains garbage. Why didn’t the author initialize it in the first place?

Thank you very much.

apache – mod_headers check for existence of multiple cookies and perform a function only on those cookies

I have a requirement on Apache 2.4 wherein I’d like to check for specific cookies and set the HTTPOnly plus Secure flags only on those Cookies and ignore other Cookies.

E.g. On browser I have the following Cookies for the same web domain i.e. CookieA, CookieB, CookieC, CookieD, CookieE, CookieF.

However in Apache (mod_headers), I’d like to match using CookieName only CookieB and CookieC; then update the settings for HTTPOnly and Secure Flags only for CookieB and CookieC.

PseudoLogic :

If getAllCookies contains CookieB
  then update only CookieB  (Header edit Set-Cookie (CookieB) "$1; HTTPOnly; Secure"
elseIf getAllCookies contains CookieC
  then update only CookieC  (Header edit Set-Cookie (CookieC) "$1; HTTPOnly; Secure"
endIf

Integral of Legendre’s function

Is there any formula for computing the following integral $$int_a^1(P^m_l)^2(x),dx;-1<a<1$$
where $P^m_l$ is the associated Legendre’s function ( of first kind) of order $minmathbb{N}$ and of degree $l=-0.5+it$ with $tinmathbb{R}$.

numerical integration – Integrate over one variable of a 2D interpolating function returned from NDEigensystem

I’m trying to implement the answer for “Integrate only one variable of a 2D interpolating function” (https://mathematica.stackexchange.com/a/161962/73672) but for interpolating functions returned from NDEigenSystem it isn’t working.

First I solved for my required eigenfunctions and stored them as “funs”:

    A = 0.0025; Subscript(V, 0) = 1 ; d = 2; 
schröd = -A*d^2 (Pi)*D((Psi)(n, (CurlyPhi)), {(CurlyPhi), 2}) + 
   A/(4 (Pi)) ((CurlyPhi)*(CurlyPhi)*(Psi)(n, (CurlyPhi)) + 
      2 I*D((Psi)(n, (CurlyPhi)), {n, 1}) - 
      D((Psi)(n, (CurlyPhi)), {n, 2})) - 
   Subscript(V, 
    0) ((Cos(2 (Pi)*d*n)) + Cos((CurlyPhi)) - 20) (Psi)(
     n, (CurlyPhi));

 Subscript(n, min) = -1/2; Subscript(n, max) = 1/2; Subscript( (CurlyPhi), min) = -(Pi); Subscript((CurlyPhi), max) = (Pi); 

{vals, funs} = NDEigensystem({schröd,
    PeriodicBoundaryCondition((Psi)(n, (CurlyPhi)), 
     Subscript((CurlyPhi), min) <= (CurlyPhi) <= 
       Subscript((CurlyPhi), max) && n == Subscript(n, max) , 
     FindGeometricTransform({{Subscript(n, min), 
         Subscript((CurlyPhi), min)}, {Subscript(n, min), 
         Subscript((CurlyPhi), max)}}, {{Subscript(n, max), 
         Subscript((CurlyPhi), min)}, {Subscript(n, max), 
         Subscript((CurlyPhi), max)}})((2))), 
    PeriodicBoundaryCondition(Exp(I 2 (Pi) n)*(Psi)(n, (CurlyPhi)),
      Subscript(n, min) <= n <= Subscript(n, max) && (CurlyPhi) == 
       Subscript((CurlyPhi), max), 
     FindGeometricTransform({{Subscript(n, min), 
         Subscript((CurlyPhi), min)}, {Subscript(n, max), 
         Subscript((CurlyPhi), min)}}, {{Subscript(n, min), 
         Subscript((CurlyPhi), max)}, {Subscript(n, max), 
         Subscript((CurlyPhi), max)}})((2)))}, (Psi)(
    n, (CurlyPhi))   , {n, (CurlyPhi)} (Element) 
    Rectangle({Subscript(n, min), Subscript((CurlyPhi), 
      min)}, {Subscript(n, max), Subscript((CurlyPhi), max)}), 8);

The answer to the other question was as follows:

    da = Flatten(
       Table({t, tau, N@Sin(2 (t + 3 tau)) Exp(-2 t - tau)}, {t, 0, 2, 
         2/100}, {tau, 0, 5, 5/100}), 1);
    f = Interpolation@da;
    {{x1, x2}, {y1, y2}} = f("Domain");
    intx = Integrate(f(x, y), x) /. x -> x2;
    
    nintx(y_?NumericQ) := Module({x}, NIntegrate(f(x, y), {x, x1, x2}));
    
    Plot(nintx(y), {y, y1, y2}, PlotRange -> All)

However, trying to implement this myself gives an error after the third line, I believe because it reads n2 as 0.5:


    f = funs((1));
        {{n1, n2}, {(CurlyPhi)1, (CurlyPhi)2}} = f("Domain");
        
        intn = Integrate(f(n, (CurlyPhi)), n) /. n -> n2;

General::ivar: 0.5 is not a valid variable.

Integrate::ilim: Invalid integration variable or limit(s) in 0.5.

Thank you so much in advance for your help!

G sheet How to jump over no value cells with SUMIF function

I would to get the sum of the duration of the column B

+---+----------+
| A | 14:45:00 |
+---+----------+
| A | #Value!  |
+---+----------+
| A | 13:34:50 |
+---+----------+
| B | 23:41:00 |
+---+----------+
| B | 43:46:00 |
+---+----------+

I’m using these functions :

=SUMIF( A1:A5 ; "B" ;B1:B5 ) this one gives me the sum of time

=SUMIF( A1:A5 ; "A" ;B1:B5 ) This one doesn’t work because I’ve an Error with #Value! in B2.

How to jump over the “#Value! Error” cells with SUMIF ?