IInk SDK Web REST Math recognition examples
Writing a formula
Considering this request body.
{
"configuration": {
"lang": "en_US",
"math": {
"solver": {
"enable": true,
"fractional-part-digits": 3,
"decimal-separator": ".",
"rounding-mode": "half up",
"angle-unit": "deg"
},
"margin": {
"top": 20,
"left": 10,
"right": 10,
"bottom": 10
},
"eraser": {
"erase-precisely": false
},
"undo-redo": {
"mode": "stroke"
},
"mimeTypes": [
"application/x-latex"
]
},
"export": {
"image-resolution": 300,
"jiix": {
"bounding-box": false,
"strokes": false,
"text": {
"chars": false,
"words": true
}
}
}
},
"xDPI": 96,
"yDPI": 96,
"contentType": "Math",
"height": 420,
"width": 2560,
"strokeGroups": [
{
"penStyle": "color: #000000;\nwidth: 1.8897637795275593;\n-myscript-pen-width: 1;\n-myscript-pen-fill-style: none;\n-myscript-pen-fill-color: #FFFFFF00;",
"strokes": [
{
"id": "stroke-f6031833-dea0-46dc-80bc-aa83bb2e4b12",
// Open the file to see the full content (1,944 lines)
The strokes in the strokeGroups of this request correspond to that writing:
If you ask for application/x-latex output, you will obtain the following result :
\int ^{b}_{a}f'\left( x\right) dx=f\left( b\right) -f\left( a\right).
You can then use this output to insert the formula in your documents:
If your need is to analyze the components of the formula, you can also ask for application/vnd.myscript.jiix or application/mathml+xml.
Solving an equation
Considering this request body.
{
"xDPI": 96,
"yDPI": 96,
"width": 815,
"height": 1153,
"contentType": "Math",
"configuration": {
"lang": "en_US",
"text": {},
"export": {
"jiix": {
"strokes": false,
"text": {
"chars": false,
"words": true
}
}
}
},
"strokeGroups": [
{
"strokes": [
{
"x": [
124,
126,
126,
124,
124
],
"y": [
214,
219,
222,
227,
230
],
"t": [
50708,
50866,
50882,
50899,
50916
],
"p": [
0.5,
0.7679404212893917,
0.6761535882018319,
0.7531128489300326,
0.6761535882018319
// Open the file to see the full content (542 lines)
The strokes in the strokeGroups of this request correspond to that writing:
If you ask for application/x-latex output, you will obtain the following result :
\pi \times 25^{2}=.
Which is Latex for:
When you ask for application/vnd.myscript.jiix, you can see that a node solving the equation is flagged as generated:
{
"type": "Math",
"expressions": [ {
"type": "=",
"id": "math/37",
"bounding-box": {
"x": 87.8999939,
"y": 55.0916634,
"width": 10.2020874,
"height": 7.29166794
},
"operands": [ {
"type": "×",
"id": "math/42",
"bounding-box": {
"x": 25.1937485,
"y": 44.2437477,
"width": 65.2354126,
"height": 18.4041672
},
"operands": [ {
"type": "number",
"id": "math/38",
"label": "π",
"value": 3.14159265,
"exact-value": "3.141592653589793239",
"bounding-box": {
"x": 25.1937485,
"y": 54.0333328,
"width": 20.7854156,
"height": 8.34999847
}
}, {
"type": "power",
"id": "math/41",
"bounding-box": {
"x": 62.2354164,
"y": 44.2437477,
"width": 28.1937447,
"height": 17.3458328
},
"operands": [ {
"type": "number",
"id": "math/39",
"label": "25",
"value": 25,
"bounding-box": {
"x": 62.2354164,
"y": 50.59375,
"width": 18.6687508,
"height": 10.9958305
}
}, {
"type": "number",
"id": "math/40",
"label": "2",
"value": 2,
"bounding-box": {
"x": 82.6083298,
"y": 44.2437477,
"width": 7.8208313,
"height": 7.55625153
}
} ]
} ]
}, {
"type": "number",
"label": "?",
"generated": true,
"error": "Unsolved"
} ]
} ],
"bounding-box": {
"x": 25.1937485,
"y": 44.2437477,
"width": 72.9083328,
"height": 18.4041672
},
"id": "MainBlock",
"version": "3"
}
If you ask for conversion when you send your strokes, the equation's solving appears in all the outputs.
\pi \times 25^{2}\simeq 1963.495
