Hello all!

So I am using GLM to fit a graph of resistance vs. temperature, and I need the regression line to have an intercept of 100 Ohms at 0 degrees Centigrade. My code is -

```
xdata = temp_calib_data[:Pt100][:, 1] |> Vector{Float64}
ydata = temp_calib_data[:Pt100][:, 2] |> Vector{Float64}
data = DataFrame(:X => xdata, :Y=> ydata)
Pt100_fit = lm(@formula(Y~X), data)
b, m = round.(coef(Pt100_fit), digits=3)
scatter(xdata, ydata, label="Data", legend=:topleft, xlabel="Temperature (Hg)", ylabel = "Resistance Î©")
plot!(xdata, predict(Pt100_fit), ls=:dash, label="m = $m, b=$b")
```

I tried using `@formula(Y~100+X)`

however that threw an error. How can I force a certain intercept?

Thank you for the help!