Changes in doc/guide/pd/polydispersity.rst [75e4319:1f058ea] in sasmodels

File:

• doc/guide/pd/polydispersity.rst (modified) (4 diffs)

doc/guide/pd/polydispersity.rst

@@ -40 +40 @@
 calculations are generally more robust with more data points or more angles.
 
-The following six distribution functions are provided:
+The following five distribution functions are provided:
 
 *  *Rectangular Distribution*
-*  *Uniform Distribution*
 *  *Gaussian Distribution*
 *  *Lognormal Distribution*
 *  *Schulz Distribution*
 *  *Array Distribution*
-*  *Boltzmann Distribution*
 
 These are all implemented as *number-average* distributions.
@@ -85 +83 @@
     Rectangular distribution.
 
-Uniform Distribution
-^^^^^^^^^^^^^^^^^^^^^^^^
-
-The Uniform Distribution is defined as
-
-    .. math::
-
-        f(x) = \frac{1}{\text{Norm}}
-        \begin{cases}
-          1 & \text{for } |x - \bar x| \leq \sigma \\
-          0 & \text{for } |x - \bar x| > \sigma
-        \end{cases}
-
-    where $\bar x$ is the mean of the distribution, $\sigma$ is the half-width, and
-    *Norm* is a normalization factor which is determined during the numerical
-    calculation.
-
-    Note that the polydispersity is given by
-
-    .. math:: \text{PD} = \sigma / \bar x
-
-    .. figure:: pd_uniform.jpg
-
-        Uniform distribution.
-
 .. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
 
@@ -208 +181 @@
 ^^^^^^^^^^^^^^^^^^
 
-This user-definable distribution should be given as a simple ASCII text
+This user-definable distribution should be given as as a simple ASCII text
 file where the array is defined by two columns of numbers: $x$ and $f(x)$.
 The $f(x)$ will be normalized to 1 during the computation.
@@ -227 +200 @@
 given for the model will have no affect, and will be ignored when computing
 the average.  This means that any parameter with an array distribution will
-not be fitable.
-
-.. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
-
-Boltzmann Distribution
-^^^^^^^^^^^^^^^^^^^^^^
-
-The Boltzmann Distribution is defined as
-
-.. math::
-
-    f(x) = \frac{1}{\text{Norm}}
-           \exp\left(-\frac{ | x - \bar x | }{\sigma}\right)
-
-where $\bar x$ is the mean of the distribution and *Norm* is a normalization
-factor which is determined during the numerical calculation.
-The width is defined as
-
-.. math:: \sigma=\frac{k T}{E}
-
-which is the inverse Boltzmann factor,
-where $k$ is the Boltzmann constant, $T$ the temperature in Kelvin and $E$ a
-characteristic energy per particle.
-
-.. figure:: pd_boltzmann.jpg
-
-    Boltzmann distribution.
+not be fittable.
 
 .. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ