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km3py
km3io
Commits
24ac1230
Commit
24ac1230
authored
5 years ago
by
Zineb Aly
Browse files
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add notebook tutorials
parent
5d0303d7
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Pipeline
#7648
passed with warnings
5 years ago
Stage: test
Stage: coverage
Stage: doc
Stage: deploy
Changes
3
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3 changed files
km3io/aanet.py
+5
-5
5 additions, 5 deletions
km3io/aanet.py
notebooks/OfflineReader_tutorial.ipynb
+830
-0
830 additions, 0 deletions
notebooks/OfflineReader_tutorial.ipynb
notebooks/Reader_tutorial.ipynb
+29
-145
29 additions, 145 deletions
notebooks/Reader_tutorial.ipynb
with
864 additions
and
150 deletions
km3io/aanet.py
+
5
−
5
View file @
24ac1230
...
...
@@ -550,14 +550,14 @@ class OfflineHit:
class
OfflineTracks
:
"""
wrapper for offline tracks
"""
def
__init__
(
self
,
keys
,
values
,
fit_keys
=
None
):
"""
Summary
"""
wrapper for offline tracks
Parameters
----------
keys :
TYPE
Description
values :
TYPE
Description
keys :
list of str
list of cropped tracks keys.
values :
list of arrays
list of arrays containting tracks data.
fit_keys : None, optional
list of tracks fit information (not yet outsourced in offline
files).
...
...
This diff is collapsed.
Click to expand it.
notebooks/OfflineReader_tutorial.ipynb
0 → 100644
+
830
−
0
View file @
24ac1230
This diff is collapsed.
Click to expand it.
notebooks/
Aanet
Reader_tutorial.ipynb
→
notebooks/Reader_tutorial.ipynb
+
29
−
145
View file @
24ac1230
...
...
@@ -28,7 +28,7 @@
"metadata": {},
"outputs": [],
"source": [
"from km3io import
Aanet
Reader"
"from km3io
.aanet
import Reader"
]
},
{
...
...
@@ -44,7 +44,7 @@
},
{
"cell_type": "code",
"execution_count":
12
,
"execution_count":
4
,
"metadata": {
"scrolled": true
},
...
...
@@ -52,130 +52,16 @@
{
"data": {
"text/plain": [
"Events keys are:\n",
"\tid\n",
"\tdet_id\n",
"\tmc_id\n",
"\trun_id\n",
"\tmc_run_id\n",
"\tframe_index\n",
"\ttrigger_mask\n",
"\ttrigger_counter\n",
"\toverlays\n",
"\thits\n",
"\ttrks\n",
"\tw\n",
"\tw2list\n",
"\tw3list\n",
"\tmc_t\n",
"\tmc_hits\n",
"\tmc_trks\n",
"\tcomment\n",
"\tindex\n",
"\tflags\n",
"\tt.fSec\n",
"\tt.fNanoSec\n",
"Hits keys are:\n",
"\thits.id\n",
"\thits.dom_id\n",
"\thits.channel_id\n",
"\thits.tdc\n",
"\thits.tot\n",
"\thits.trig\n",
"\thits.pmt_id\n",
"\thits.t\n",
"\thits.a\n",
"\thits.pos.x\n",
"\thits.pos.y\n",
"\thits.pos.z\n",
"\thits.dir.x\n",
"\thits.dir.y\n",
"\thits.dir.z\n",
"\thits.pure_t\n",
"\thits.pure_a\n",
"\thits.type\n",
"\thits.origin\n",
"\thits.pattern_flags\n",
"Tracks keys are:\n",
"\ttrks.fUniqueID\n",
"\ttrks.fBits\n",
"\ttrks.usr_data\n",
"\ttrks.usr_names\n",
"\ttrks.id\n",
"\ttrks.pos.x\n",
"\ttrks.pos.y\n",
"\ttrks.pos.z\n",
"\ttrks.dir.x\n",
"\ttrks.dir.y\n",
"\ttrks.dir.z\n",
"\ttrks.t\n",
"\ttrks.E\n",
"\ttrks.len\n",
"\ttrks.lik\n",
"\ttrks.type\n",
"\ttrks.rec_type\n",
"\ttrks.rec_stages\n",
"\ttrks.status\n",
"\ttrks.mother_id\n",
"\ttrks.fitinf\n",
"\ttrks.hit_ids\n",
"\ttrks.error_matrix\n",
"\ttrks.comment\n",
"Mc hits keys are:\n",
"\tmc_hits.id\n",
"\tmc_hits.dom_id\n",
"\tmc_hits.channel_id\n",
"\tmc_hits.tdc\n",
"\tmc_hits.tot\n",
"\tmc_hits.trig\n",
"\tmc_hits.pmt_id\n",
"\tmc_hits.t\n",
"\tmc_hits.a\n",
"\tmc_hits.pos.x\n",
"\tmc_hits.pos.y\n",
"\tmc_hits.pos.z\n",
"\tmc_hits.dir.x\n",
"\tmc_hits.dir.y\n",
"\tmc_hits.dir.z\n",
"\tmc_hits.pure_t\n",
"\tmc_hits.pure_a\n",
"\tmc_hits.type\n",
"\tmc_hits.origin\n",
"\tmc_hits.pattern_flags\n",
"Mc tracks keys are:\n",
"\tmc_trks.fUniqueID\n",
"\tmc_trks.fBits\n",
"\tmc_trks.usr_data\n",
"\tmc_trks.usr_names\n",
"\tmc_trks.id\n",
"\tmc_trks.pos.x\n",
"\tmc_trks.pos.y\n",
"\tmc_trks.pos.z\n",
"\tmc_trks.dir.x\n",
"\tmc_trks.dir.y\n",
"\tmc_trks.dir.z\n",
"\tmc_trks.t\n",
"\tmc_trks.E\n",
"\tmc_trks.len\n",
"\tmc_trks.lik\n",
"\tmc_trks.type\n",
"\tmc_trks.rec_type\n",
"\tmc_trks.rec_stages\n",
"\tmc_trks.status\n",
"\tmc_trks.mother_id\n",
"\tmc_trks.fitinf\n",
"\tmc_trks.hit_ids\n",
"\tmc_trks.error_matrix\n",
"\tmc_trks.comment"
"<Reader: 10 entries>"
]
},
"execution_count":
12
,
"execution_count":
4
,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"reader =
Aanet
Reader(aanet_file)\n",
"reader = Reader(aanet_file)\n",
"reader"
]
},
...
...
@@ -189,8 +75,6 @@
"text/plain": [
"['trks.fUniqueID',\n",
" 'trks.fBits',\n",
" 'trks.usr_data',\n",
" 'trks.usr_names',\n",
" 'trks.id',\n",
" 'trks.pos.x',\n",
" 'trks.pos.y',\n",
...
...
@@ -219,7 +103,7 @@
}
],
"source": [
"reader.tracks_keys"
"reader.
keys.
tracks_keys"
]
},
{
...
...
@@ -230,7 +114,7 @@
{
"data": {
"text/plain": [
"<Table [<Row 0> <Row 1> <Row 2> ... <Row 7> <Row 8> <Row 9>] at 0x7f
83f9d62c1
0>"
"<Table [<Row 0> <Row 1> <Row 2> ... <Row 7> <Row 8> <Row 9>] at 0x7f
ed2d98a75
0>"
]
},
"execution_count": 6,
...
...
@@ -240,7 +124,7 @@
],
"source": [
"# big lazyarray with ALL file data!\n",
"lazy_data = reader._
lazy_
data\n",
"lazy_data = reader._data\n",
"lazy_data"
]
},
...
...
@@ -252,7 +136,7 @@
{
"data": {
"text/plain": [
"<ChunkedArray [5971 5971 5971 ... 5971 5971 5971] at 0x7f
83f9d2cd
d0>"
"<ChunkedArray [5971 5971 5971 ... 5971 5971 5971] at 0x7f
ed2d91f9
d0>"
]
},
"execution_count": 7,
...
...
@@ -309,7 +193,7 @@
},
{
"cell_type": "code",
"execution_count": 1
5
,
"execution_count": 1
0
,
"metadata": {},
"outputs": [],
"source": [
...
...
@@ -330,16 +214,16 @@
},
{
"cell_type": "code",
"execution_count": 1
4
,
"execution_count": 1
1
,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"<ChunkedArray [[806451572 806451572 806451572 ... 809544061 809544061 809544061] [806451572 806451572 806451572 ... 809524432 809526097 809544061] [806451572 806451572 806451572 ... 809544061 809544061 809544061] ... [806451572 806455814 806465101 ... 809526097 809544058 809544061] [806455814 806455814 806455814 ... 809544061 809544061 809544061] [806455814 806455814 806455814 ... 809544058 809544058 809544061]] at 0x7f
83f9a1389
0>"
"<ChunkedArray [[806451572 806451572 806451572 ... 809544061 809544061 809544061] [806451572 806451572 806451572 ... 809524432 809526097 809544061] [806451572 806451572 806451572 ... 809544061 809544061 809544061] ... [806451572 806455814 806465101 ... 809526097 809544058 809544061] [806455814 806455814 806455814 ... 809544061 809544061 809544061] [806455814 806455814 806455814 ... 809544058 809544058 809544061]] at 0x7f
ed2d8af45
0>"
]
},
"execution_count": 1
4
,
"execution_count": 1
1
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -352,7 +236,7 @@
},
{
"cell_type": "code",
"execution_count": 1
6
,
"execution_count": 1
2
,
"metadata": {},
"outputs": [
{
...
...
@@ -371,7 +255,7 @@
" dtype=int32)"
]
},
"execution_count": 1
6
,
"execution_count": 1
2
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -384,7 +268,7 @@
},
{
"cell_type": "code",
"execution_count": 1
7
,
"execution_count": 1
3
,
"metadata": {},
"outputs": [
{
...
...
@@ -393,7 +277,7 @@
"60"
]
},
"execution_count": 1
7
,
"execution_count": 1
3
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -407,7 +291,7 @@
},
{
"cell_type": "code",
"execution_count": 1
8
,
"execution_count": 1
4
,
"metadata": {},
"outputs": [
{
...
...
@@ -416,7 +300,7 @@
"806455814"
]
},
"execution_count": 1
8
,
"execution_count": 1
4
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -435,16 +319,16 @@
},
{
"cell_type": "code",
"execution_count": 1
9
,
"execution_count": 1
5
,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"<ChunkedArray [[-0.872885221293917 -0.872885221293917 -0.872885221293917 ... -0.6631226836266504 -0.5680647731737454 -0.5680647731737454] [-0.8351996698137462 -0.8351996698137462 -0.8351996698137462 ... -0.7485107718446855 -0.8229838871876581 -0.239315690284641] [-0.989148723802379 -0.989148723802379 -0.989148723802379 ... -0.9350162572437829 -0.88545604390297 -0.88545604390297] ... [-0.5704611045902105 -0.5704611045902105 -0.5704611045902105 ... -0.9350162572437829 -0.4647231989130516 -0.4647231989130516] [-0.9779941383490359 -0.9779941383490359 -0.9779941383490359 ... -0.88545604390297 -0.88545604390297 -0.8229838871876581] [-0.7396916780974963 -0.7396916780974963 -0.7396916780974963 ... -0.6631226836266504 -0.7485107718446855 -0.7485107718446855]] at 0x7f
83f9b65f9
0>"
"<ChunkedArray [[-0.872885221293917 -0.872885221293917 -0.872885221293917 ... -0.6631226836266504 -0.5680647731737454 -0.5680647731737454] [-0.8351996698137462 -0.8351996698137462 -0.8351996698137462 ... -0.7485107718446855 -0.8229838871876581 -0.239315690284641] [-0.989148723802379 -0.989148723802379 -0.989148723802379 ... -0.9350162572437829 -0.88545604390297 -0.88545604390297] ... [-0.5704611045902105 -0.5704611045902105 -0.5704611045902105 ... -0.9350162572437829 -0.4647231989130516 -0.4647231989130516] [-0.9779941383490359 -0.9779941383490359 -0.9779941383490359 ... -0.88545604390297 -0.88545604390297 -0.8229838871876581] [-0.7396916780974963 -0.7396916780974963 -0.7396916780974963 ... -0.6631226836266504 -0.7485107718446855 -0.7485107718446855]] at 0x7f
ed2d8b885
0>"
]
},
"execution_count": 1
9
,
"execution_count": 1
5
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -456,7 +340,7 @@
},
{
"cell_type": "code",
"execution_count":
20
,
"execution_count":
16
,
"metadata": {},
"outputs": [
{
...
...
@@ -476,7 +360,7 @@
" -0.97094183])"
]
},
"execution_count":
20
,
"execution_count":
16
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -489,7 +373,7 @@
},
{
"cell_type": "code",
"execution_count":
2
1,
"execution_count": 1
7
,
"metadata": {},
"outputs": [
{
...
...
@@ -498,7 +382,7 @@
"56"
]
},
"execution_count":
2
1,
"execution_count": 1
7
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -512,7 +396,7 @@
},
{
"cell_type": "code",
"execution_count":
22
,
"execution_count":
18
,
"metadata": {},
"outputs": [
{
...
...
@@ -521,7 +405,7 @@
"-0.6024604933159441"
]
},
"execution_count":
22
,
"execution_count":
18
,
"metadata": {},
"output_type": "execute_result"
}
...
...
@@ -552,5 +436,5 @@
}
},
"nbformat": 4,
"nbformat_minor":
2
"nbformat_minor":
4
}
%% Cell type:code id: tags:
```
python
# Add file to current python path
from
pathlib
import
Path
import
sys
sys
.
path
.
append
(
str
(
Path
.
cwd
().
parent
))
Path
.
cwd
()
print
(
sys
.
path
)
```
%% Output
['/home/zineb/km3net/km3net/km3io/notebooks', '/home/zineb/miniconda3/envs/km3pipe/lib/python37.zip', '/home/zineb/miniconda3/envs/km3pipe/lib/python3.7', '/home/zineb/miniconda3/envs/km3pipe/lib/python3.7/lib-dynload', '', '/home/zineb/miniconda3/envs/km3pipe/lib/python3.7/site-packages', '/home/zineb/km3net/km3net/km3io', '/home/zineb/miniconda3/envs/km3pipe/lib/python3.7/site-packages/IPython/extensions', '/home/zineb/.ipython', '/home/zineb/km3net/km3net/km3io']
%% Cell type:code id: tags:
```
python
from
km3io
import
Aanet
Reader
from
km3io
.aanet
import
Reader
```
%% Cell type:code id: tags:
```
python
# test samples directory - aanet test file
files_path
=
Path
.
cwd
().
parent
/
'
tests/samples
'
aanet_file
=
files_path
/
'
aanet_v2.0.0.root
'
```
%% Cell type:code id: tags:
```
python
reader
=
Aanet
Reader
(
aanet_file
)
reader
=
Reader
(
aanet_file
)
reader
```
%% Output
Events keys are:
id
det_id
mc_id
run_id
mc_run_id
frame_index
trigger_mask
trigger_counter
overlays
hits
trks
w
w2list
w3list
mc_t
mc_hits
mc_trks
comment
index
flags
t.fSec
t.fNanoSec
Hits keys are:
hits.id
hits.dom_id
hits.channel_id
hits.tdc
hits.tot
hits.trig
hits.pmt_id
hits.t
hits.a
hits.pos.x
hits.pos.y
hits.pos.z
hits.dir.x
hits.dir.y
hits.dir.z
hits.pure_t
hits.pure_a
hits.type
hits.origin
hits.pattern_flags
Tracks keys are:
trks.fUniqueID
trks.fBits
trks.usr_data
trks.usr_names
trks.id
trks.pos.x
trks.pos.y
trks.pos.z
trks.dir.x
trks.dir.y
trks.dir.z
trks.t
trks.E
trks.len
trks.lik
trks.type
trks.rec_type
trks.rec_stages
trks.status
trks.mother_id
trks.fitinf
trks.hit_ids
trks.error_matrix
trks.comment
Mc hits keys are:
mc_hits.id
mc_hits.dom_id
mc_hits.channel_id
mc_hits.tdc
mc_hits.tot
mc_hits.trig
mc_hits.pmt_id
mc_hits.t
mc_hits.a
mc_hits.pos.x
mc_hits.pos.y
mc_hits.pos.z
mc_hits.dir.x
mc_hits.dir.y
mc_hits.dir.z
mc_hits.pure_t
mc_hits.pure_a
mc_hits.type
mc_hits.origin
mc_hits.pattern_flags
Mc tracks keys are:
mc_trks.fUniqueID
mc_trks.fBits
mc_trks.usr_data
mc_trks.usr_names
mc_trks.id
mc_trks.pos.x
mc_trks.pos.y
mc_trks.pos.z
mc_trks.dir.x
mc_trks.dir.y
mc_trks.dir.z
mc_trks.t
mc_trks.E
mc_trks.len
mc_trks.lik
mc_trks.type
mc_trks.rec_type
mc_trks.rec_stages
mc_trks.status
mc_trks.mother_id
mc_trks.fitinf
mc_trks.hit_ids
mc_trks.error_matrix
mc_trks.comment
<Reader: 10 entries>
%% Cell type:code id: tags:
```
python
reader
.
tracks_keys
reader
.
keys
.
tracks_keys
```
%% Output
['trks.fUniqueID',
'trks.fBits',
'trks.usr_data',
'trks.usr_names',
'trks.id',
'trks.pos.x',
'trks.pos.y',
'trks.pos.z',
'trks.dir.x',
'trks.dir.y',
'trks.dir.z',
'trks.t',
'trks.E',
'trks.len',
'trks.lik',
'trks.type',
'trks.rec_type',
'trks.rec_stages',
'trks.status',
'trks.mother_id',
'trks.fitinf',
'trks.hit_ids',
'trks.error_matrix',
'trks.comment']
%% Cell type:code id: tags:
```
python
# big lazyarray with ALL file data!
lazy_data
=
reader
.
_
lazy_
data
lazy_data
=
reader
.
_data
lazy_data
```
%% Output
<Table [<Row 0> <Row 1> <Row 2> ... <Row 7> <Row 8> <Row 9>] at 0x7f
83f9d62c1
0>
<Table [<Row 0> <Row 1> <Row 2> ... <Row 7> <Row 8> <Row 9>] at 0x7f
ed2d98a75
0>
%% Cell type:code id: tags:
```
python
# getting the run_id for a specific event (event 5 for example)
reader
[
'
run_id
'
]
```
%% Output
<ChunkedArray [5971 5971 5971 ... 5971 5971 5971] at 0x7f
83f9d2cd
d0>
<ChunkedArray [5971 5971 5971 ... 5971 5971 5971] at 0x7f
ed2d91f9
d0>
%% Cell type:code id: tags:
```
python
# one can check how many hits are in event 5
reader
[
5
][
'
hits
'
]
```
%% Output
60
%% Cell type:code id: tags:
```
python
# one can also check how many tracks are in event 5
reader
[
5
][
'
trks
'
]
```
%% Output
56
%% Cell type:code id: tags:
```
python
# # the user is reminded to always specify the "correct" event/hits/tracks
# # key in the Aanet event file
# try:
# reader['whatever']
# except KeyError as e:
# print(e)
```
%% Cell type:markdown id: tags:
# Now let's explore in more details the hits:
%% Cell type:code id: tags:
```
python
# reading all data from a specific branch in hits data: for example
# 'hits.dom_id'
reader
[
'
hits.dom_id
'
]
```
%% Output
<ChunkedArray [[806451572 806451572 806451572 ... 809544061 809544061 809544061] [806451572 806451572 806451572 ... 809524432 809526097 809544061] [806451572 806451572 806451572 ... 809544061 809544061 809544061] ... [806451572 806455814 806465101 ... 809526097 809544058 809544061] [806455814 806455814 806455814 ... 809544061 809544061 809544061] [806455814 806455814 806455814 ... 809544058 809544058 809544061]] at 0x7f
83f9a1389
0>
<ChunkedArray [[806451572 806451572 806451572 ... 809544061 809544061 809544061] [806451572 806451572 806451572 ... 809524432 809526097 809544061] [806451572 806451572 806451572 ... 809544061 809544061 809544061] ... [806451572 806455814 806465101 ... 809526097 809544058 809544061] [806455814 806455814 806455814 ... 809544061 809544061 809544061] [806455814 806455814 806455814 ... 809544058 809544058 809544061]] at 0x7f
ed2d8af45
0>
%% Cell type:code id: tags:
```
python
# the user can access hits.dom_id data for a specific event (for example
# event 5)
reader
[
'
hits.dom_id
'
][
5
]
```
%% Output
array([806455814, 806487219, 806487219, 806487219, 806487226, 808432835,
808432835, 808432835, 808432835, 808432835, 808432835, 808432835,
808451904, 808451904, 808451907, 808451907, 808469129, 808469129,
808469129, 808493910, 808949744, 808949744, 808951460, 808951460,
808956908, 808961655, 808964908, 808969848, 808969857, 808972593,
808972593, 808972598, 808972598, 808972698, 808972698, 808974758,
808974811, 808976377, 808981510, 808981523, 808981812, 808982005,
808982005, 808982018, 808982077, 808982077, 808982547, 809007627,
809521500, 809521500, 809521500, 809524432, 809526097, 809526097,
809526097, 809526097, 809526097, 809526097, 809526097, 809544058],
dtype=int32)
%% Cell type:code id: tags:
```
python
# We previsouly checked (using reader[5]['hits']) that event
# 5 has 60 hits, now we can see that reader['hits.dom_id'][5]
# has exaclty 60 dom ids as well!
len
(
reader
[
'
hits.dom_id
'
][
5
])
```
%% Output
60
%% Cell type:code id: tags:
```
python
# one can access a dom id of the first hit
reader
[
'
hits.dom_id
'
][
5
][
0
]
```
%% Output
806455814
%% Cell type:markdown id: tags:
# Now let's explore in more details the tracks:
%% Cell type:code id: tags:
```
python
# reading all data from a specific branch in tracks data:
reader
[
'
trks.dir.z
'
]
```
%% Output
<ChunkedArray [[-0.872885221293917 -0.872885221293917 -0.872885221293917 ... -0.6631226836266504 -0.5680647731737454 -0.5680647731737454] [-0.8351996698137462 -0.8351996698137462 -0.8351996698137462 ... -0.7485107718446855 -0.8229838871876581 -0.239315690284641] [-0.989148723802379 -0.989148723802379 -0.989148723802379 ... -0.9350162572437829 -0.88545604390297 -0.88545604390297] ... [-0.5704611045902105 -0.5704611045902105 -0.5704611045902105 ... -0.9350162572437829 -0.4647231989130516 -0.4647231989130516] [-0.9779941383490359 -0.9779941383490359 -0.9779941383490359 ... -0.88545604390297 -0.88545604390297 -0.8229838871876581] [-0.7396916780974963 -0.7396916780974963 -0.7396916780974963 ... -0.6631226836266504 -0.7485107718446855 -0.7485107718446855]] at 0x7f
83f9b65f9
0>
<ChunkedArray [[-0.872885221293917 -0.872885221293917 -0.872885221293917 ... -0.6631226836266504 -0.5680647731737454 -0.5680647731737454] [-0.8351996698137462 -0.8351996698137462 -0.8351996698137462 ... -0.7485107718446855 -0.8229838871876581 -0.239315690284641] [-0.989148723802379 -0.989148723802379 -0.989148723802379 ... -0.9350162572437829 -0.88545604390297 -0.88545604390297] ... [-0.5704611045902105 -0.5704611045902105 -0.5704611045902105 ... -0.9350162572437829 -0.4647231989130516 -0.4647231989130516] [-0.9779941383490359 -0.9779941383490359 -0.9779941383490359 ... -0.88545604390297 -0.88545604390297 -0.8229838871876581] [-0.7396916780974963 -0.7396916780974963 -0.7396916780974963 ... -0.6631226836266504 -0.7485107718446855 -0.7485107718446855]] at 0x7f
ed2d8b885
0>
%% Cell type:code id: tags:
```
python
# the user can access trks.dir.z data for a specific event (for example
# event 5)
reader
[
'
trks.dir.z
'
][
5
]
```
%% Output
array([-0.60246049, -0.60246049, -0.60246049, -0.51420541, -0.5475772 ,
-0.5772408 , -0.56068238, -0.64907684, -0.67781799, -0.66565114,
-0.63014839, -0.64566464, -0.62691012, -0.58465493, -0.59287533,
-0.63655091, -0.63771247, -0.73446841, -0.7456636 , -0.70941246,
-0.66312268, -0.66312268, -0.56806477, -0.56806477, -0.66312268,
-0.66312268, -0.74851077, -0.74851077, -0.66312268, -0.74851077,
-0.56806477, -0.74851077, -0.66312268, -0.74851077, -0.56806477,
-0.66312268, -0.56806477, -0.66312268, -0.56806477, -0.56806477,
-0.66312268, -0.74851077, -0.66312268, -0.93501626, -0.56806477,
-0.74851077, -0.66312268, -0.56806477, -0.82298389, -0.74851077,
-0.66312268, -0.56806477, -0.82298389, -0.56806477, -0.66312268,
-0.97094183])
%% Cell type:code id: tags:
```
python
# We previsouly checked (using reader[5]['trks']) that event
# 5 has 56 tracks, now we can see that reader['trks.dir.z'][5]
# has exaclty 56 values of trks.dir.z as well!
len
(
reader
[
'
trks.dir.z
'
][
5
])
```
%% Output
56
%% Cell type:code id: tags:
```
python
# one can access the first trks.dir.z from event 5 using
reader
[
'
trks.dir.z
'
][
5
][
0
]
```
%% Output
-0.6024604933159441
...
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