Result Table
The Result Table in CadnaA lists the calculation results for receiver points and for facade points resulting from Building Evaluations Symbols. The contents and the layout of the Result table can be edited. Click on the Tables menu the command Result Table to open the dialog and click the button „Edit“. On the dialog Edit Result Table all columns of the Result Table are numbered in rows. In order to change a rows content double-click into the respective row. The contents for each column can be selected from the list box „Expression“.
Default Column Contents
By default, the following column contents are available:
| Expression | Explanation |
| (user defined) | A user-defined expression can be entered (see subsequent section „User-defined Column Content“). |
| (String variable) | Either a default-text variable or a user-defined text variable (referring to the Memo-Window of an object: receiver point or Building Evaluation Symbol) can be addressed (see subsequent sections „Standard-Text Variables“ and „User-defined Text Variables“). |
| Name | name of the receiver point or the Building Evaluation Symbol |
| ID | ID of the receiver point or the Building Evaluation Symbol |
| Coordinates: X | x-coordinate of the receiver point or the Building Evaluation Symbol, in meter |
| Coordinates: Y | y-coordinate of the receiver point or the Building Evaluation Symbol, in meter |
| Coordinates: Z | z-coordinate of the receiver point or the Building Evaluation Symbol, in meter |
| Coordinates: Ground | ground height at the receiver point or at the Building Evaluation Symbol, in meter |
| Axis: Station | station (in meter) of the next neighboring line source (line source, road or railway), i.e. perpendicular distance, seen from the 1st point of the source line |
| Axis: Distance | perpendicular 2D-distance to the axis of the next neighboring line source (line source, road or railway), in meter |
| Axis: Height Difference | height difference of the receiver or facade points to the emission line, in meter |
| Axis: Emission Day | emission value Day of the next neighboring line source, in dB(A) |
| Axis: Emission Night | emission value Night of the next neighboring line source, in dB(A) |
| Axis: Emission Evening | emission value Evening of the next neighboring line source |
| Axis: Name | name of the next neighboring line source |
| Axis: ID | ID of the next neighboring line source |
| Land Use | specified type of Land Use for the receiver point or the Building Evaluation Symbol |
| Limiting Value Day *) | Limiting Value Day based on the type of Land Use and type of use selected, in dB(A) |
| Limiting Value Night *) | Limiting Value Night based on the type of Land Use and type of use selected, in dB(A) |
| Level Day *) | immission level for evaluation parameter 1 (Default: Ld), in dB(A) |
| Level Night *) | immission level for evaluation parameter 2 (Default: Ln), in dB(A) |
*) The designation and sequence of those expressions follow the selections and specifications on tab „Evaluation Parameters“ (Configuration dialog). Up to 4 limiting value and levels can appear each.
User-defined Column Content
When selecting „(user defined)“ from the list box the following expressions can be used:
| Expression | Explanation |
| LP# | level for evaluation parameter #=1..4 of the current variant |
| LP#V$ | level for evaluation parameter #=1..4 of variant $ Example: LP1@V3 references the level for the evaluation parameter 1 of variant 3. |
| LP#@SOI0 toLP#@SOI8 | as above, but referencing to an octave band value of a spectrum of the active variant by the index of the octave band. Index of octave-band center frequencies (Hz): 0=31.5, 1=63, 2=125, 3=250, 4=500 etc. Example: LP1@V3@SOI2 references the evaluation parameter 1 at octave-band center frequency 125 Hz of variant 3. |
| LP#@V$@SOF31 to LP#@V$@SOF8000 | as above, but referencing to an octave band value of a spectrum of a specific variant $ by the octave-band center frequency. |
| LP#@STI0 to LP#@STI26 | as above, but referencing to an third-octave band value of a spectrum of the active variant by the index of the third-octave band. Index of of third-octave band center frequencies (Hz): 0=25, 1=31.5, 2=40, 3=50, 4=63 etc. Example: LP1@V3@STI2 references the evaluation parameter 1 at third-octave-band center frequency 40 Hz of variant 3. |
| LP@V$STF25 to LP@V$STF10000 | as above, but referencing to an third-octave band value of a spectrum of a specific variant $ by the third octave band frequency. |
| GW# | limiting value for evaluation parameters #=1..4. This could be either the maximum value of type of Land Use defined, or the „Standard Level“ as specified on dialog Receiver. |
| SP<n> | Column of the result table (with <n> consecutive column number of the column) Example: SP4 addresses the value in the 4th column. REMARK: The column number is displayed on the dialog Edit Result Column in column „No.“. This number does not necessarily correspond to the position of the column on the Result Table as columns can be set to „not visible“ (see Editing the Result Table,Display of Column in the CadnaA-Reference Manual). |
Note
The weighting (linear, A, ...) of spectral values (octave band values, third octave band values) depends on the settings in Options|Miscellaneous. A specific weighting can be set by adding an additional suffix (e.g. LP1@SOF500@WA, see Object Attributes Syntax Suffixes).
Examples for user-defined expressions
Example 1
Expression: LP1@V1-GW1
This expression subtracts from the calculated evaluation parameter 1 of the variant01 the limiting value. The result is displayed in the column.
Example 2
Complex boolean expressions are possible as well, e.g.:
(SP15>GW1)*(SP19>0.05)*((SP19>2.05)+(SP15>69.05))
Formulas enable to define conditions which - when true - indicate in the result table whether additional noise protection measures are required. If the result is 0, the condition is not fulfilled, if the result is >0, the condition is fulfilled (Yes=1; No=0)
For the condition to be true in the given example, the first two brackets must fulfill the condition („*“ stands for boolean AND), but only one of the last two brackets must fulfill the condition („+“ stands for boolean OR).
Default-String Variables
By selecting „(String Variable)“ several default string variables or user-defined string variables may be entered. In both cases, the input box „Expression“ is activated to enter text strings or operators. The following default string variables are available for the Result Table only. The use of capital letters is mandatory.
| Expression | Explanation |
| DIR | angular degree 0°-360°, with 0 indicating the North direction |
| FASSNR | facade point number (position along the building’s facade) On the Building Noise Map the facade point symbols are numbered continuously, starting with the 1st polygon point of the building according to the sequence of input. Example: Due to the segmentation of the facade (menu Options|Building Noise Map) 12 facade point symbols result for all facades. Those are numbered by the facade point numbers 1, 2, 3 etc. up to 12. With a building having 5 floors all floors will receive this facade point number as a designation. |
| HIRI | direction using one letter (N-North, O-East, S-South, W-West) |
| HIRI2 | direction using two letters, when applicable (e.g. NW for North-West, SO for South-East) |
| STW | displays the floor designation for the facade points of the Building Noise Map |
| FAC_LEN | facade length per facade point |
User-defined String Variables
Furthermore, string variables defined on the dialog Memo-Window of the receiver can be display when selecting „(String Variable)“ from the list box. On the input box „Expression“ enter the same string as on dialog Memo-Window of the receiver point. Enter an arbitrary string followed by an equal sign and the string variable’s value (i.e. without any blanks). Then, the text string following the equal sign is displayed in the result table.
Example
The dialog Memo-Window contains two string variables reporting a numbering and the type of area:
NO=1234/8
TYPE=MA
On the dialog Edit Result Table add two further rows (via the context menu) which will be display on the Result Table as columns. Select for either columns „(String variable)“ and enter for „Expression“ in the first column „No“ and for the second column „TYPE“.
Subsequently, the strings 1234/8 and MA will be displayed in the Result Table.