# Minimum In Period

## Function Prototype

/* Minimum In Period */
/* Type: math */
/* Input arrays: 1    Options: 1    Output arrays: 1 */
/* Inputs: real */
/* Options: period */
/* Outputs: min */
int ti_min_start(TI_REAL const *options);
int ti_min(int size,
TI_REAL const *const *inputs,
TI_REAL const *options,
TI_REAL *const *outputs);

## Description

This documentation is still a work in progress. It has omissions, and it probably has errors too. If you see any issues, or have any general feedback, please get in touch.

The Minimum In Period indicator returns the minimum value in the last period n bars.

$$min_{t} = minimum(in_{t}, in_{t-1}, ..., in_{t-n+1})$$

## Example Usage

### Calling From C

/* Example usage of Minimum In Period */
/* Assuming that 'input' is a pre-loaded array of size 'in_size'. */
TI_REAL *inputs[] = {input};
TI_REAL options[] = {5}; /* period */
TI_REAL *outputs[1]; /* min */

/* Determine how large the output size is for our options. */
const int out_size = in_size - ti_min_start(options);

/* Allocate memory for output. */
outputs[0] = malloc(sizeof(TI_REAL) * out_size); assert(outputs[0] != 0); /* min */

/* Run the actual calculation. */
const int ret = ti_min(in_size, inputs, options, outputs);
assert(ret == TI_OKAY);


### Calling From Lua (with Tulip Chart bindings)

-- Example usage of Minimum In Period
min = ti.min(input, 5)


## Example Calculation

period = 5

dateinputmin
2005-11-0181.59
2005-11-0281.06
2005-11-0382.87
2005-11-0483.00
2005-11-0783.6181.06
2005-11-0883.1581.06
2005-11-0982.8482.84
2005-11-1083.9982.84
2005-11-1184.5582.84
2005-11-1484.3682.84
2005-11-1585.5382.84
2005-11-1686.5483.99
2005-11-1786.8984.36
2005-11-1887.7784.36
2005-11-2187.2985.53

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