- Table of contents
- getData method()
- return value
- getData, an overloaded method
getData method()¶
Here is a complete description of getData() method used to get data from snapshot.
getData() method belong to uns::Cunsin class.
return value¶
All getData() method, return a boolean "true" in case of success, "false" otherwise.
getData, an overloaded method¶
Method getData is overloaded and can have different number of arguments
- getData(comp, tag, n, array) see arguments description below
- getData( tag, n, array) see arguments description below
- getData( tag, value) see arguments description below
Arguments description¶
| argument | type | description |
|---|---|---|
| comp | input c++ string or char * | specify requested component (see table below) |
| tag | input c++ string or char * | specify requested data type (see table below) |
| n | int * | return number of particles for the requested data |
| array | float** or int** | return an array fulfilled with the requested data |
| value | float* or int* | return one value fulfilled with the requested data |
Components (comp)¶
From argument comp , we select the component to be treated.
| component value | description |
|---|---|
| gas | Gas particles |
| halo | Dark matter particles |
| dm | Dark matter particles |
| disk | Old stars particles |
| stars | Stars particles |
| bulge | Bulge particles |
| bndry | bndry particles |
Data (tag)¶
From argument tag , we specify which data we want to get. If comp is specified in getData() method, then retrieved data will belong to the component "comp". If comp is not specified, then retrieved data will belong to all the components selected during the object instantiation.
| tag value | n | array | description |
|---|---|---|---|
| pos | #particles | float ** | return array of particles position (size=n*3) |
| vel | #particles | float ** | return array of particles velocitie (size=n*3) |
| mass | #particles | float ** | return array of particles velocitie (size=n) |
| acc | #particles | float ** | return array of particles acceleration (size=n*3) |
| pot | #particles | float ** | return array of particles potential (size=n) |
| rho | #particles | float ** | return array of particles density (size=n) |
| hsml | #particles | float ** | return array of particles hydro smooth length (size=n) |
| temp | #particles | float ** | return array of particles temperature (size=n) |
| age | #particles | float ** | return array of particles age (size=n) |
| metal | #particles | float ** | return array of particles metallicity (size=n) |
| u | #particles | float ** | return array of particles internal energy (size=n) |
| id | #particles | int ** | return array of particles index (size=n) |
| aux | #particles | float ** | return auxiliary array (size=n) |
| keys | #particles | float ** | return keys array (size=n) |
| tag value | value | description |
|---|---|---|
| ngas | int * | #gas particles |
| nhalo | int * | #dark matter particles |
| ndisk | int * | #old stars particles |
| nstars | int * | #stars particles |
| nbulge | int * | #bulge particles |
| nbndry | int * | #bndry particles |
| nsel | int * | #selected particles |
| time | float * | snapshot time |