[saeed jamshidi]

Hello everyone,

I'm going to prepare some data for machine learning. To this end, I need to get field data such as pressure and velocity over time for all cell centers.

However, I have simulated my problem in Fluent Unsteady. So, how can I extract the field data in tecplot over time?

In tecplot I follow up these procedures:

1. create macro
2. load data
3. create rectangular zone
4. interpolate data to the zone
5. and finally write the data

All are good, except third step, where I should define I and J numbers.
How can I extract data for all cells over time respectively?
Thank you.

[saeed jamshidi]

Any Idea?🙏

[wsfowler]

PyTecplot is a great way to grab raw data from Tecplot 360.

If the data are already cell-centered, simply grab and array of data using the following PyTecplot (python code)

import tecplot as tp
from tecplot.constant import *
dataset = tp.active_frame().dataset

# Get an array of Pressure values for the first zone
zone = dataset.zone(0) # zone numbers are zero based in PyTecplot
variable = dataset.variable("Pressure")
values = zone.values(variable)[:]

# Loop over all zones and all variables, getting the cell-centered data values
for z in dataset.zones():
    for v in dataset.variables():
        var_values = z.values(v)
        if var_values.location == ValueLocation.CellCentered:
            cc_values = var_values[:]
            # Do something with cc_values