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import streamlit as st
# Unit conversion functions
def convert_weight(value, from_unit, to_unit):
conversions = {
'g': {'g': 1, 'kg': 0.001, 'mg': 1000, 'lb': 0.00220462, 'oz': 0.035274},
'kg': {'kg': 1, 'g': 1000, 'mg': 1e6, 'lb': 2.20462, 'oz': 35.274},
'mg': {'mg': 1, 'g': 0.001, 'kg': 1e-6, 'lb': 2.20462e-6, 'oz': 3.5274e-5},
'lb': {'lb': 1, 'kg': 0.453592, 'g': 453.592, 'oz': 16, 'mg': 453592},
'oz': {'oz': 1, 'g': 28.3495, 'kg': 0.0283495, 'lb': 0.0625, 'mg': 28349.5}
}
return value * conversions[from_unit][to_unit]
def convert_length(value, from_unit, to_unit):
conversions = {
'meters': {'meters': 1, 'yards': 1.09361},
'yards': {'yards': 1, 'meters': 0.9144}
}
return value * conversions[from_unit][to_unit]
# System parameters
direct_systems = {
'Tex': {'weight_unit': 'g', 'length_unit': 'meters', 'denominator': 1000},
'Decitex': {'weight_unit': 'g', 'length_unit': 'meters', 'denominator': 10000},
'Millitex': {'weight_unit': 'mg', 'length_unit': 'meters', 'denominator': 1000},
'Kilotex': {'weight_unit': 'kg', 'length_unit': 'meters', 'denominator': 1000},
'Denier': {'weight_unit': 'g', 'length_unit': 'meters', 'denominator': 9000},
'Spindle': {'weight_unit': 'lb', 'length_unit': 'yards', 'denominator': 14400},
}
indirect_systems = {
'English Cotton': {'length_per_hank': 840, 'length_unit': 'yards',
'weight_per_unit': 1, 'weight_unit': 'lb'},
'French Cotton': {'length_per_hank': 1000, 'length_unit': 'meters',
'weight_per_unit': 1, 'weight_unit': 'kg'},
'Worsted': {'length_per_hank': 560, 'length_unit': 'yards',
'weight_per_unit': 1, 'weight_unit': 'lb'},
'Linen (Wet spun)': {'length_per_hank': 300, 'length_unit': 'yards',
'weight_per_unit': 1, 'weight_unit': 'lb'},
'Metric': {'length_per_hank': 1000, 'length_unit': 'meters',
'weight_per_unit': 1, 'weight_unit': 'kg'},
'Woolen- Yorkshire Skein': {'length_per_hank': 1536, 'length_unit': 'yards',
'weight_per_unit': 6, 'weight_unit': 'lb'},
}
st.title('Universal Yarn Count Calculator')
# System type selection
system_type = st.radio("Select Count System Type", ['Direct', 'Indirect'])
if system_type == 'Direct':
selected_system = st.selectbox('Select Direct System', list(direct_systems.keys()))
params = direct_systems[selected_system]
else:
selected_system = st.selectbox('Select Indirect System', list(indirect_systems.keys()))
params = indirect_systems[selected_system]
# Input fields
col1, col2 = st.columns(2)
with col1:
length = st.number_input('Length', min_value=0.0, value=1000.0, step=0.1)
length_unit = st.selectbox('Length Unit', ['meters', 'yards'])
with col2:
weight = st.number_input('Weight', min_value=0.0, value=1.0, step=0.1)
weight_unit = st.selectbox('Weight Unit', ['g', 'kg', 'mg', 'lb', 'oz'])
if st.button('Calculate'):
try:
# Convert length to system's unit
converted_length = convert_length(length, length_unit, params['length_unit'])
# Convert weight to system's unit
converted_weight = convert_weight(weight, weight_unit, params['weight_unit'])
if system_type == 'Direct':
# Direct system calculation
denominator = params['denominator']
if converted_length <= 0:
st.error("Length must be greater than zero")
else:
count = (converted_weight * denominator) / converted_length
result = f"**{selected_system} Count**: {count:.2f}"
else:
# Indirect system calculation
lph = params['length_per_hank']
wpu = params['weight_per_unit']
if converted_weight <= 0:
st.error("Weight must be greater than zero")
else:
count = (converted_length * wpu) / (converted_weight * lph)
result = f"**{selected_system} Count**: {count:.2f}'s"
st.success(result)
except ZeroDivisionError:
st.error("Cannot divide by zero - check your input values")
except Exception as e:
st.error(f"Error in calculation: {str(e)}") |