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What is wrong with my code, I get an output of an orange block.

Steven Fields

Posted 10 years ago

JuliaData[c_, {{xmin_, xmax_}, {ymin_, ymax_}}, xdiv_, ydiv_] := Table[orbitLength[x + I y, c], {y, ymax, ymin, -(ymax - ymin)/ydiv}, {x, xmin, xmax, (xmax - xmin)/xdiv}] data = JuliaData[-.1 + 8 I, {{-2, 2}, {-2, 2}}, 100, 500]; ArrayPlot[data, DataRange -> {{-2, 2}, {-2, 2}}, FrameTicks -> Automatic]

JuliaData[c_, {{xmin_, xmax_}, {ymin_, ymax_}}, xdiv_, ydiv_] :=
     Table[orbitLength[x + I y, c], {y, ymax, 
       ymin, -(ymax - ymin)/ydiv}, {x, xmin, xmax, (xmax - xmin)/xdiv}]

data = JuliaData[-.1 + 8 I, {{-2, 2}, {-2, 2}}, 100, 500];
ArrayPlot[data, DataRange -> {{-2, 2}, {-2, 2}}, 
 FrameTicks -> Automatic]

POSTED BY: Steven Fields

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Gerard Kopcsay

Gerard Kopcsay, Retired scientist

Posted 10 years ago

Other than syntax errors from omitting the underscore on the patterns in the definition of JuliaData[], it appears that you did not define the orbitlength[] function.

POSTED BY: Gerard Kopcsay

Bruce Miller

Bruce Miller, Wolfram Research

Posted 10 years ago

ArrayPlot (like other data plotting functions) wants Real values, not Complex.

POSTED BY: Bruce Miller

elena lopez

elena lopez, ipn

Posted 10 years ago

What is wrong with my code fir[z_] := flAdsfntscrgm[z] ( e2[b[z]] - e2[b[z] + 2sgmRxrrc ])/( 2sgmRx ) pot = 180.; alt = 635.; rrc = 472.; vol = Pirrc^2alt fnts = 7.810^(16)pot /vol sgmRx = 0.065; f1Ads = 0.145; rgm[y_] := Sqrt[rrc /(rrc + y)] e2[y_] := ExpIntegralE[2, y] b[x_] := Which[x < a1, sgmB1x, a1 <= x < a1 + a2, sgmB1a1 + (x - a1)sgmB2, a1 + a2 <= x, sgmB1a1 + sgmB2a2 + (x - a1 - a2)*sgmB3] a1 = 76.; a2 = 20.3; sgmB1 = 0.065; sgmB2 = 0.166; sgmB3 = 0.1;

What is wrong with my code

fir[z_] :=  flAds*fnts*crgm[z] ( e2[b[z]] - e2[b[z] + 2*sgmRx*rrc ])/( 2*sgmRx )
pot = 180.; alt = 635.; rrc = 472.; vol = Pi*rrc^2*alt
fnts = 7.8*10^(16)*pot /vol
sgmRx = 0.065; f1Ads = 0.145;
rgm[y_] := Sqrt[rrc /(rrc + y)]
e2[y_] := ExpIntegralE[2, y]

b[x_] := Which[x < a1, sgmB1*x, a1 <= x < a1 + a2, 
  sgmB1*a1 + (x - a1)*sgmB2, a1 + a2 <= x, 
  sgmB1*a1 + sgmB2*a2 + (x - a1 - a2)*sgmB3]
a1 = 76.; a2 = 20.3;
sgmB1 = 0.065; sgmB2 = 0.166; sgmB3 = 0.1;

POSTED BY: elena lopez

Luis Ledesma

Posted 10 years ago

Hello Elena, I don't know if you've declared all your variables, but what I share below you worked for me, I hope that you will serve to your doubts. a1 = 76.; a2 = 20.3; sgmB1 = 0.065; sgmB2 = 0.166; sgmB3 = 0.1; pot = 180.; alt = 635.; rrc = 472.; vol = Pirrc^2alt; fnts = 7.810^(16)pot/vol; sgmRx = 0.065; f1Ads = 0.145; fir[z_] := f1Adsfntscrgm[z](e2[b[z]] - e2[b[z] + 2sgmRxrrc])/(2sgmRx); crgm[y_] := Sqrt[rrc/(rrc + y)]; e2[y_] := ExpIntegralE[2, y]; b[x_] := Which[x < a1, sgmB1x, a1 <= x < a1 + a2, sgmB1a1 + (x - a1)sgmB2, a1 + a2 <= x, sgmB1a1 + sgmB2a2 + (x - a1 - a2)sgmB3] Here are some examples with several test values that probe with the function b In[15]:= Table[b[i], {i, 74, 164, 15}] Out[15]= {4.81, 7.098, 9.0798, 10.5798, 12.0798, 13.5798, 15.0798} Apparently your Which is well formed. I hope that you've helped in something,greetings, white donkey.

Hello Elena,

I don't know if you've declared all your variables, but what I share below you worked for me, I hope that you will serve to your doubts.

a1 = 76.; a2 = 20.3;
sgmB1 = 0.065; sgmB2 = 0.166; sgmB3 = 0.1;
pot = 180.;
alt = 635.;
rrc = 472.;
vol = Pi*rrc^2*alt;
fnts = 7.8*10^(16)*pot/vol;
sgmRx = 0.065;
f1Ads = 0.145;
fir[z_] := 
  f1Ads*fnts*crgm[z]*(e2[b[z]] - e2[b[z] + 2*sgmRx*rrc])/(2*sgmRx);
crgm[y_] := Sqrt[rrc/(rrc + y)];
e2[y_] := ExpIntegralE[2, y];
b[x_] := Which[x < a1, sgmB1*x, a1 <= x < a1 + a2, 
  sgmB1*a1 + (x - a1)*sgmB2, a1 + a2 <= x, 
  sgmB1*a1 + sgmB2*a2 + (x - a1 - a2)*sgmB3]

Here are some examples with several test values that probe with the function b

In[15]:= Table[b[i], {i, 74, 164, 15}]

Out[15]= {4.81, 7.098, 9.0798, 10.5798, 12.0798, 13.5798, 15.0798}

Apparently your Which is well formed. I hope that you've helped in something,greetings, white donkey.

POSTED BY: Luis Ledesma

Moderation Team

Moderation Team, WOLFRAM

Posted 10 years ago

Elena, When you have a new topic, please go to the Dashboard page and click the big green New Discussion button. Also, please say what incorrect behavior is happening. See http://community.wolfram.com/groups/-/m/t/270507 for notes on formatting code examples. Moderation Team

POSTED BY: Moderation Team

Moderation Team

Moderation Team, WOLFRAM

Posted 10 years ago

Mr. Ledesma, Your English is better than Google's. Please feel free to clean up the text. Moderation Team

POSTED BY: Moderation Team

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