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ohlc: use all coords on given x-axis to compute min coord diff #1066

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Merged
merged 4 commits into from
Oct 25, 2016
Merged

ohlc: use all coords on given x-axis to compute min coord diff #1066

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4352dd8
ohlc: use all coords on given x-axis to compute min coord diff
etpinard Oct 21, 2016
ecec280
Merge branch 'master' into ohlc-global-offset
etpinard Oct 24, 2016
c1fa966
box: map boxlist index to calcdata items
etpinard Oct 24, 2016
612fb3d
ohlc: AJ-proof convertTickWidth step
etpinard Oct 24, 2016
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55 changes: 41 additions & 14 deletions src/traces/ohlc/transform.js
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Original file line number Diff line number Diff line change
Expand Up @@ -121,7 +121,7 @@ exports.calcTransform = function calcTransform(gd, trace, opts) {

var xa = axisIds.getFromTrace(gd, trace, 'x'),
ya = axisIds.getFromTrace(gd, trace, 'y'),
tickWidth = convertTickWidth(gd, xa, trace._fullInput.tickwidth);
tickWidth = convertTickWidth(gd, xa, trace);

var open = trace.open,
high = trace.high,
Expand Down Expand Up @@ -191,23 +191,50 @@ exports.calcTransform = function calcTransform(gd, trace, opts) {
trace.text = textOut;
};

function convertTickWidth(gd, xa, tickWidth) {
var fullData = gd._fullData,
coords = [];
function convertTickWidth(gd, xa, trace) {
var fullInput = trace._fullInput,
tickWidth = fullInput.tickwidth,
minDiff = fullInput._minDiff;

// find all coordinates attached to this x-axis
for(var i = 0; i < fullData.length; i++) {
var trace = fullData[i]._fullInput;
if(!minDiff) {
var fullData = gd._fullData,
ohlcTracesOnThisXaxis = [];

if(trace.type === 'ohlc' &&
trace.visible === true &&
trace.xaxis === xa._id &&
trace.x
) {
coords = coords.concat(trace.x.map(xa.d2c));
minDiff = Infinity;

// find min x-coordinates difference of all traces
// attached to this x-axis and stash the result

var i;

for(i = 0; i < fullData.length; i++) {
var _trace = fullData[i]._fullInput;

if(_trace.type === 'ohlc' &&
_trace.visible === true &&
_trace.xaxis === xa._id
) {
ohlcTracesOnThisXaxis.push(_trace);

// - _trace.x may be undefined here,
// it is filled later in calcTransform
//
// - handle trace of length 1 separately.

if(_trace.x && _trace.x.length > 1) {
var _minDiff = Lib.distinctVals(_trace.x.map(xa.d2c)).minDiff;
minDiff = Math.min(minDiff, _minDiff);
}
}
}

// if minDiff is still Infinity here, set it to 1
if(minDiff === Infinity) minDiff = 1;

for(i = 0; i < ohlcTracesOnThisXaxis.length; i++) {
ohlcTracesOnThisXaxis[i]._minDiff = minDiff;
}
}

var minDiff = Lib.distinctVals(coords).minDiff;
return minDiff * tickWidth;
}
72 changes: 72 additions & 0 deletions test/jasmine/tests/finance_test.js
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Expand Up @@ -564,6 +564,78 @@ describe('finance charts calc transforms:', function() {
32.87, 33.5, 33.37, 33.37, 33.37, 33.62
]);
});

it('should use the smallest trace minimum x difference to convert *tickwidth* to data coords for all traces attached to a given x-axis', function() {
var trace0 = Lib.extendDeep({}, mock1, {
type: 'ohlc',
tickwidth: 0.5
});

var trace1 = Lib.extendDeep({}, mock1, {
type: 'ohlc',
tickwidth: 0.5
});

// shift time coordinates by 10 hours
trace1.x = trace1.x.map(function(d) {
return d + ' 10:00';
});

var out = _calc([trace0, trace1]);

expect(out[0].x.map(ms2DateTime)).toEqual([
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@alexcjohnson I think this is what you wanted. Can you confirm?

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Yes, looks great. Thanks!

'2016-08-31 12', '2016-09-01', '2016-09-01', '2016-09-01', '2016-09-01', '2016-09-01 12', null,
'2016-09-03 12', '2016-09-04', '2016-09-04', '2016-09-04', '2016-09-04', '2016-09-04 12', null,
'2016-09-05 12', '2016-09-06', '2016-09-06', '2016-09-06', '2016-09-06', '2016-09-06 12', null,
'2016-09-09 12', '2016-09-10', '2016-09-10', '2016-09-10', '2016-09-10', '2016-09-10 12', null
]);

expect(out[1].x.map(ms2DateTime)).toEqual([
'2016-09-01 12', '2016-09-02', '2016-09-02', '2016-09-02', '2016-09-02', '2016-09-02 12', null,
'2016-09-02 12', '2016-09-03', '2016-09-03', '2016-09-03', '2016-09-03', '2016-09-03 12', null,
'2016-09-04 12', '2016-09-05', '2016-09-05', '2016-09-05', '2016-09-05', '2016-09-05 12', null,
'2016-09-06 12', '2016-09-07', '2016-09-07', '2016-09-07', '2016-09-07', '2016-09-07 12', null
]);

expect(out[2].x.map(ms2DateTime)).toEqual([
'2016-08-31 22', '2016-09-01 10', '2016-09-01 10', '2016-09-01 10', '2016-09-01 10', '2016-09-01 22', null,
'2016-09-03 22', '2016-09-04 10', '2016-09-04 10', '2016-09-04 10', '2016-09-04 10', '2016-09-04 22', null,
'2016-09-05 22', '2016-09-06 10', '2016-09-06 10', '2016-09-06 10', '2016-09-06 10', '2016-09-06 22', null,
'2016-09-09 22', '2016-09-10 10', '2016-09-10 10', '2016-09-10 10', '2016-09-10 10', '2016-09-10 22', null
]);

expect(out[3].x.map(ms2DateTime)).toEqual([
'2016-09-01 22', '2016-09-02 10', '2016-09-02 10', '2016-09-02 10', '2016-09-02 10', '2016-09-02 22', null,
'2016-09-02 22', '2016-09-03 10', '2016-09-03 10', '2016-09-03 10', '2016-09-03 10', '2016-09-03 22', null,
'2016-09-04 22', '2016-09-05 10', '2016-09-05 10', '2016-09-05 10', '2016-09-05 10', '2016-09-05 22', null,
'2016-09-06 22', '2016-09-07 10', '2016-09-07 10', '2016-09-07 10', '2016-09-07 10', '2016-09-07 22', null
]);
});

it('should fallback to a minimum x difference of 0.5 in one-item traces', function() {
var trace0 = Lib.extendDeep({}, mock1, {
type: 'ohlc',
tickwidth: 0.5
});
trace0.x = [ '2016-01-01' ];

var trace1 = Lib.extendDeep({}, mock0, {
type: 'ohlc',
tickwidth: 0.5
});
trace1.x = [ 10 ];

var out = _calc([trace0, trace1]);

var x0 = out[0].x;
expect(x0[x0.length - 2] - x0[0]).toEqual(1);

var x2 = out[2].x;
expect(x2[x2.length - 2] - x2[0]).toEqual(1);

expect(out[1].x).toEqual([]);
expect(out[3].x).toEqual([]);
});
});

describe('finance charts updates:', function() {
Expand Down