Data capture

Device Sensor Recorder

Capture phone orientation, location and solar geometry as timestamped field records, then export a research-ready CSV.

Device sensors
CSV export
Local workflow

Guide

Sensor readinessAllow motion/orientation and location access from an explicit tap.

Leaf or sample ID

Current orientation

Alpha (Z, yaw):N/A

Beta (X, pitch):N/A

Gamma (Y, roll):N/A

Latest location

Latitude:N/A

Longitude:N/A

Altitude:N/A

Accuracy:N/A

Session status

Recorded rows: 0

Motion access: Not requested

leafId	timestamp	latitude	longitude	altitude	accuracy_m	alpha_deg	beta_deg	gamma_deg	sunElevation_deg	sunAzimuth_deg	sensorTimestamp
No data yet. Enter ID and click “Capture Sample”.

Solar angle formulas

Elevation (h) and Azimuth (A) computed in this app follow common remote-sensing approximations:

h = asin( sin(φ)·sin(δ) + cos(φ)·cos(δ)·cos(H) ) [in radians] A = atan2( sin(H), cos(H)·sin(φ) − tan(δ)·cos(φ) ) [in radians] (degrees) = (radians) × 180/π Azimuth A is reported from North, clockwise (0..360).

Symbols:

φ: geographic latitude
δ: solar declination
H: hour angle (H = 15° × (solar time − 12))

Note: The implementation also includes Equation of Time (EoT) and time-zone offset to estimate apparent solar time.

Citation

If you use Digital Plant Phenotyping Platform v25.0 or any of its applications in your research, please cite it as:

LiangchaoDeng. (2025). smiler488/smiler488.github.io: Digital Plant Phenotyping Platform v25.0 (v25.0.0). Zenodo.
https://doi.org/10.5281/zenodo.17544584

Click to copy APA citation.

BibTeX citation (Zotero → File → Import from Clipboard)

Click to copy BibTeX to clipboard for Zotero import.

@software{Deng2025_DPPP_v25,
  author       = {Deng, Liangchao},
  title        = {Digital Plant Phenotyping Platform (v25.0)},
  year         = {2025},
  publisher    = {Zenodo},
  doi          = {10.5281/zenodo.17544584},
  url          = {https://doi.org/10.5281/zenodo.17544584},
  note         = {[Computer software]}
}