Data

[humphreylee]

Appreciate guidance on the data transformation. My data is in vector of tuples, which contains f64 and String. Example data is [(275.0, 4000.0, 1.0, "A"), (210.0, 3800.0, 2.0, "B")], whereby each tuple represent axis_x, axis_y, size, and label respectively. I struggle to convert this to dataframe format via df! or use it directly in the chart.

If I use it as it is, I got error below. This is probably expected as charming expects vector of vectors. However, a vector must have same data type, thus this can only be achieved using tuple for my case.

166 |                 .data(data0)
    |                  ---- ^^^^^ the trait `From<(f64, f64, f64, std::string::String)>` is not implemented for `NumericValue`, which is required by `(f64, f64, f64, std::string::String): Into<charming::datatype::DataPoint>`
    |                  |
    |                  required by a bound introduced by this call
    |
    = help: the following other types implement trait `From<T>`:
              <NumericValue as From<i32>>
              <NumericValue as From<i64>>
              <NumericValue as From<f32>>
              <NumericValue as From<f64>>
    = note: required for `(f64, f64, f64, std::string::String)` to implement `Into<NumericValue>`
    = note: required for `CompositeValue` to implement `From<(f64, f64, f64, std::string::String)>`
    = note: 3 redundant requirements hidden
    = note: required for `(f64, f64, f64, std::string::String)` to implement `Into<charming::datatype::DataPoint>`
note: required by a bound in `charming::series::Scatter::data`

If I use df!, I got error below.

   |                 ^^^^^^^^^^^^^^^^^^^^ the trait `From<Vec<(f64, f64, f64, std::string::String)>>` is not implemented for `CompositeValue`, which is required by `charming::datatype::DataPoint: From<Vec<(f64, f64, f64, std::string::String)>>`
   |
   = help: the following other types implement trait `From<T>`:
             <CompositeValue as From<Vec<V>>>
             <CompositeValue as From<std::string::String>>
             <CompositeValue as From<&str>>
             <CompositeValue as From<N>>
   = note: required for `Vec<(f64, f64, f64, std::string::String)>` to implement `Into<CompositeValue>`
   = note: required for `charming::datatype::DataPoint` to implement `From<Vec<(f64, f64, f64, std::string::String)>>`
   = note: this error originates in the macro `df` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.

Thanks.