Represents the range an axis is encompassing.
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#include <plot2d.h>
Represents the range an axis is encompassing.
contains a lower and upper double value and provides convenience input, output and modification functions.
- See Also
- QCPAxis::setRange
Constructs a range with lower and upper set to zero.
| QCPRange::QCPRange |
( |
double |
lower, |
|
|
double |
upper |
|
) |
| |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Constructs a range with the specified lower and upper values.
| double QCPRange::center |
( |
| ) |
const |
Returns the center of the range, i.e. (upper+lower)*0.5
| bool QCPRange::contains |
( |
double |
value | ) |
const |
Returns true when value lies within or exactly on the borders of the range.
| void QCPRange::normalize |
( |
| ) |
|
Makes sure lower is numerically smaller than upper. If this is not the case, the values are swapped.
| QCPRange QCPRange::sanitizedForLinScale |
( |
| ) |
const |
Returns a sanitized version of the range. Sanitized means for linear scales, that lower will always be numerically smaller (or equal) to upper.
| QCPRange QCPRange::sanitizedForLogScale |
( |
| ) |
const |
Returns a sanitized version of the range. Sanitized means for logarithmic scales, that the range won't span the positive and negative sign domain, i.e. contain zero. Further lower will always be numerically smaller (or equal) to upper.
If the original range does span positive and negative sign domains or contains zero, the returned range will try to approximate the original range as good as possible. If the positive interval of the original range is wider than the negative interval, the returned range will only contain the positive interval, with lower bound set to rangeFac or rangeFac *upper, whichever is closer to zero. Same procedure is used if the negative interval is wider than the positive interval, this time by changing the upper bound.
| double QCPRange::size |
( |
| ) |
const |
Returns the size of the range, i.e. upper-lower
| bool QCPRange::validRange |
( |
double |
lower, |
|
|
double |
upper |
|
) |
| |
|
static |
Checks, whether the specified range is within valid bounds, which are defined as QCPRange::maxRange and QCPRange::minRange. A valid range means:
- range bounds within -maxRange and maxRange
- range size above minRange
- range size below maxRange
| bool QCPRange::validRange |
( |
const QCPRange & |
range | ) |
|
|
static |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Checks, whether the specified range is within valid bounds, which are defined as QCPRange::maxRange and QCPRange::minRange. A valid range means:
- range bounds within -maxRange and maxRange
- range size above minRange
- range size below maxRange
| const double QCPRange::maxRange = 1e250 |
|
static |
Maximum values (negative and positive) the range will accept in range-changing functions. Larger absolute values would cause errors due to the 11-bit exponent of double precision numbers, corresponding to a maximum magnitude of roughly 1e308. Since the number of planck-volumes in the entire visible universe is only ~1e183, this should be enough.
- See Also
- validRange, minRange
| const double QCPRange::minRange = 1e-280 |
|
static |
Minimum range size (upper - lower) the range changing functions will accept. Smaller intervals would cause errors due to the 11-bit exponent of double precision numbers, corresponding to a minimum magnitude of roughly 1e-308.
- See Also
- validRange, maxRange
The documentation for this class was generated from the following files:
- C:/Users/mpeniak/Dropbox/Aquila/trunk/aquila/include/plot2d.h
- C:/Users/mpeniak/Dropbox/Aquila/trunk/aquila/src/plot2d.cpp
1.8.3