I am not sure if code will do much good here. I have included many standalone TikZ pictures but this pictures is the only one to act differently.
Here is the picture in compiled from the standalone .tex code.
Now here is the picture in the main .tex file. Notice the location of the alpha_2 and the arc in the main file which I just compiled again to verify everything was updated.
I don't know what to do about this discrepancy and how to correct it. The image is a previous run of the standalone that was incorrect. However, it refuses to update. This has never been an issue before.
In the main file, I am using the following code to include the TikZ picture.
Additionally, I have \usepackage{standalone} in the preample of the main file.
\begin{figure*}
\centering
\includestandalone{flybytrailingside}
\caption[Trailing Side Flyby]{A trailing side (or sunlit side) planetary
flyby.}
\label{trailingflyby}
\end{figure*}
For the TikZ picture, I am using the document class standalone and then drawing the picture.
The code for \alpha_2 is
\draw (3.285, 2.15) arc[radius = .125, start angle = 90, end angle = -90]
node[left, font = \tiny, inner sep = 0] {\(\alpha_2\)};
\documentclass[convert = false]{standalone}
\usepackage[utf8]{inputenc}
\renewcommand{\rmdefault}{ppl}
\linespread{1.05}
\usepackage[scaled]{helvet}
\usepackage{courier}
\usepackage{eulervm}
\normalfont
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage{tikz}
\usepackage{fp}
\usetikzlibrary{arrows}
\usetikzlibrary{calc}
\usetikzlibrary{decorations.markings}
\usetikzlibrary{backgrounds}
\usetikzlibrary{intersections}
\usetikzlibrary{fixedpointarithmetic}
\begin{document}
\begin{tikzpicture}[
every label/.append style = {font = \tiny},
line join = round, line cap = round, >=triangle 45,
%scale = .04, transform shape
]
\def\angle{45}
\def\peri{.5}
\def\planet{.4}
\def\a{1}
\def\circrad{3.5}
\def\dom{3.15}
\pgfmathsetmacro{\b}{\a / (tan(\angle))}
\coordinate (O) at (0, 0);
\draw[-latex] (O) -- (\circrad, 0) node[below left, font = \tiny]
{\(\mathbf{V}\)};
\draw[-latex] (\circrad, 0) -- +({1}, 0) node[right, font = \tiny]
{\(\hat{\mathbf{u}}_V\)};
\draw[-latex] (0, \circrad) -- +(0, {1}) node[above, font = \tiny]
{\(\hat{\mathbf{u}}_S\)};
\draw[thick, gray, name path global = soi] (O)
circle[radius = \circrad];
\begin{scope}[rotate = {-110}, shift = {(0, {-\a - \peri})},
decoration = {markings,
mark = at position 0.20 with {\arrow{latex reversed}},
mark = at position 0.80 with {\arrow{latex reversed}}
}]
\draw[red, postaction = decorate, name path global = hyper]
plot[domain = -\dom:\dom, samples = 500]
({\x}, {\a * sqrt(1 + (\x / \b)^2)});
\draw[dashed] plot[domain = 0:\dom, samples = 100] ({\x}, {\a / \b * \x})
coordinate (P1);
\path plot[domain = 0:-\dom, samples = 100] ({\x}, {-\a / \b * \x})
coordinate (P2);
\draw[dashed] plot[domain = -\dom:0, samples = 100] ({\x}, {-\a / \b * \x})
coordinate (I);
\draw plot[domain = 0:.5, samples = 100] ({\x}, {-\a / \b * \x})
coordinate (P3);
\draw[dashed] (O) -- (I);
\shadedraw[gray, inner color = blue!40!green,
outer color = black!50!blue!50] (O) circle[radius = \planet];
\draw[fixed point arithmetic, latex-latex] let
\p0 = (I),
\p1 = (O),
\p2 = (P1),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.75cm},
\n4 = {(\n1 + \n2) / 2}
in (I) +(\n1:\n3) arc[radius = \n3, start angle = \n1, end angle = \n2]
node[fill = white, inner sep = 0, font = \tiny] at (\n4:.5cm) {\(\beta\)};
\draw[fixed point arithmetic, latex-latex] let
\p0 = (I),
\p1 = (O),
\p2 = (P2),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.75cm},
\n4 = {(\n1 + \n2) / 2}
in (I) +(\n1:\n3) arc[radius = \n3, start angle = \n1, end angle = \n2]
node[fill = white, inner sep = 0, font = \tiny] at (\n4:.5cm) {\(\beta\)};
\draw[fixed point arithmetic, -latex] let
\p0 = (I),
\p1 = (P3),
\p2 = (P1),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.75cm},
\n4 = {(\n1 + \n2) / 2}
in (I) +(\n1:\n3) arc[radius = \n3, start angle = \n1, end angle = \n2]
node[fill = white, inner sep = 0, font = \tiny] at (\n4:\n3) {\(\delta\)};
\end{scope}
\node[name intersections = {of = soi and hyper}] (P4) at
($(intersection-2)$) {};
\draw[-latex] (P4.center) -- +(1.5, 0) node[font = \tiny, below left]
{\(\mathbf{V}\)} coordinate (P5);
\draw (P5) -- +(.5, 0) coordinate (P6);
\path[name path global = circ] (P4.center) circle[radius = 1bp];
\path[name intersections = {of = circ and hyper}] (P4.center) --
($(intersection-2)!.75cm!(intersection-1)$) coordinate (P7);
\draw[-latex] (P5) -- +($(P7) - (P4)$) node[font = \tiny, right]
{\(\mathbf{v}_{\infty_1}\)} coordinate (P8);
\draw[-latex] (P4.center) -- (P8) node[font = \tiny, above,
inner sep = 0, pos = .65] {\(\mathbf{V}_1^{(v)}\)};
\node[name intersections = {of = soi and hyper}] (P9) at ($(intersection-1)$)
{};
\draw[-latex] (P9.center) -- +(1.5, 0) node[font = \tiny, below left]
{\(\mathbf{V}\)} coordinate (P10);
\draw (P10) -- +(.65, 0) coordinate (P11);
\path[name path global = circ2] (P9.center) circle[radius = 1bp];
\path[name intersections = {of = circ2 and hyper}] (P9.center) --
($(intersection-2)!.75cm!(intersection-1)$) coordinate (P12);
\draw[-latex] (P10) -- +($(P12) - (P9)$) node[font = \tiny, pos =1.25]
{\(\mathbf{v}_{\infty_2}\)} coordinate (P13);
\draw[-latex] (P9.center) -- (P13) node[font = \tiny, fill = white,
inner sep = 0, pos = .5, above = .1cm] {\(\mathbf{V}_2^{(v)}\)};
\draw[fixed point arithmetic, -latex] let
\p0 = (P4.center),
\p1 = (P5),
\p2 = (P8),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.75cm},
\n4 = {(\n1 + \n2) / 2}
in (P4.center) +(\n1:\n3) arc[radius = \n3, start angle = \n1,
end angle = \n2] node[fill = white, inner sep = 0, font = \tiny] at
([shift = (P4.center)] \n4:1cm) {\(\alpha_1\)};
\draw[fixed point arithmetic, -latex] let
\p0 = (P5),
\p1 = (P6),
\p2 = (P8),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.45cm},
\n4 = {(\n1 + \n2) / 2}
in (P5) +(\n1:\n3) arc[radius = \n3, start angle = \n1,
end angle = \n2] node[fill = white, inner sep = 0, font = \tiny] at
([shift = (P5)] \n4:\n3) {\(\phi_1\)};
%{\pgfmathparse{\n2 - \n1}%
% $\pgfmathprintnumber{\pgfmathresult}^{\circ}$
%};
\draw[fixed point arithmetic] let
\p0 = (P9.center),
\p1 = (P10),
\p2 = (P13),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.5cm},
\n4 = {(\n1 + \n2) / 2}
in (P9.center) +(\n1:\n3) arc[radius = \n3, start angle = \n1,
end angle = \n2];
\draw[fixed point arithmetic] let
\p0 = (P10),
\p1 = (P11),
\p2 = (P13),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.5cm},
\n4 = {(\n1 + \n2) / 2}
in (P10) +(\n1:\n3) arc[radius = \n3, start angle = \n1,
end angle = \n2] node[fill = white, inner sep = 0, font = \tiny] at
([shift = (P10)] \n4:.7cm) {\(\phi_2\)};
%{\pgfmathparse{\n2 - \n1}%
% $\pgfmathprintnumber{\pgfmathresult}^{\circ}$
%};
\begin{scope}[on background layer]
\draw[dashed] (O) -- +($(O) - 0.65*(I)$) coordinate (P14);
\end{scope}
\draw[latex-] (P14) -- +($(P4) - (P7)$) node[font = \tiny, left]
{\(\mathbf{v}_{\infty_1}\)} coordinate (P15);
\draw[-latex] (P15) -- +($(P12) - (P9)$) node[font = \tiny, below]
{\(\mathbf{v}_{\infty_2}\)} coordinate (P16);
\draw[-latex] (P14) -- (P16) node[font = \tiny, pos = .75, above]
{\(\Delta\mathbf{V}^{(v)}\)};
\draw[fixed point arithmetic] let
\p0 = (P15),
\p1 = (P14),
\p2 = (P16),
\n1 = {atan2(\x1 - \x0, \y1 - \y0)},
\n2 = {atan2(\x2 - \x0, \y2 - \y0)},
\n3 = {.25cm},
\n4 = {(\n1 + \n2) / 2}
in (P15) +(\n1:\n3) arc[radius = \n3, start angle = \n1,
end angle = \n2] node[inner sep = 0, font = \tiny, inner sep = 0,
fill = white] at ([shift = (P15)] \n4:\n3) {\(\delta\)};
\draw (3.285, 2.15) arc[radius = .125, start angle = 90, end angle = -90]
node[left, font = \tiny, inner sep = 0] {\(\alpha_2\)};
\end{tikzpicture}
\end{document}
I would like to add that this problem just occurred again with a new standalone. Here is the picture compiled from the standalone:
and here is the picture in the document:
This picture was just created, compiled, then added to the main document, and compiled. The code can be found here:
TikZ: drawing an evolution of an ellipse to a hyperbola with the same focus
pt,px) insted of relative (em,ex).\alpha_2and the arc, as m0nhawk said. You will need to post the code in this case.\alpha_2refers to?