Time-Axis Plot (Time-Series)

XY Plot (Histograms & Graphs)

Canvas

• Canvas = Base_Image + Items (although base image is an item).
• Items are graphical element on the base image.
• Most items are bound to data values (metric).
• Most items (can) show data values by text next to it.
• “Shape Items” (can) show active/non-active status based on data values.

User Canvas Configuration File

• User configuration file describes the base image and elements.
• The file is located under PROJECT/config, and the name must be slowdash-NAME.json.
• Example from Projects/ATDS/Config:

{
    "meta": {
        "name": "ATDS",
        "title": "",
        "description": "Atomic Tritium Demonstrator at UW Top Level"
    },

    "view_box": "0 -10 1600 700",
    
    "items": [
        {
            "type": "image",
            "attr": { "x": 50, "y": -2, "height": 554, "width": 1003, "href": "ATDS.png" }
        },
        {"_type": "grid"},
        
        {
            "type": "valve", 
            "attr": {
                "x": 135, "y": 235, "width": 30, "height": 30, "orientation": "horizontal",
                "data-dx": -10, "data-dy": 50
            },
            "metric": { "channel": "sccm.Alicat.Gas", "active-above": 0.1, "format": "%.1f sccm" },
            "action": { "form": "AlicatFlow" }
        },
        {
            "type": "circle",
            "attr": { "x": 185, "y": 85, "width": 30, "height": 30, "label": "P" },
            "metric": { "channel": "mbar.CC10.Gas", "active-below": 1, "format": "%.1e mbar" }
        },

        ...
    ],
    
    "forms": {
        "AlicatFlow": {
        ...
    }
}

• meta for meta information of this configuration file.
• view_box defines the coordinate for item placement.
• items is a list of items.
• forms is for a mini control panel to send commands to server-side scripts (typically to control the device).

Item Attributes

• Attributes describes how the items appear on the canvas.
• Attributes are mostly identical to SVG attributes for the corresponding shape, with some additions.
• Commonly used SVG attributes are:
  • x, y, width, height: position and size of the item on the canvas
  • stroke, fill: line color and fill color
• Some additional attributes are:
  • label: text drawn in the shape
  • label-dx, label-dy: offset position of the label text
  • label-font-family, label-font-size: label font
  • data-dx, data-dy: offset position of the data value indicator
  • data-font-family, data-font-size: data indicator font
  • data-color: data indicator color

Metric Mapping

• Items can have associated metrics.
• With an associated metric, items will:
  • change the fill color according to the data values
  • display a “data label” showing the latest value of the metric
  • show a warning icon for alarm status
  • open a dialog containing a history plot and controls

Example:

{
    "metric": { "channel": "mbar.CC10.Gas", "active-below": 1, "format": "%.1e mbar" },
    ...
}

• active-above and/or active-below defines the active range. The color of the item changes accordingly.
• format is used for data indicator text.
• tolerable-gap can be specified for gap in time-series before alarm icon is shown. Default is 60 sec.

Action Binding

• Items can have associated actions.
• Actions can be:
  • sending commands to a server-side user scripts (see UserModule)
  • opening a web page

Example: Opening a web page

{
    "action": { "open": "./slowplot.html?config=slowplot-ATDS.json" },
    ...
}

Example: Sending a command to server-side User Module

{
    "action": { "submit": { "action": "restart_IG" } },
    ...
}

Example: Sending a command to server-side User Module with parameters (“form”)

{
    "action": { "form": "AlicatFlow" },
    ...
}

Forms are defined separately in the same configuration file:

{
    "forms": {
        "AlicatFlow": {
            "title": " Injection Flow",
            "initial": {},
            "inputs": [
                { "name": "flow", "label": "Set-point (sccm)", "type": "number", "initial": 15 }
            ],
            "buttons": [
                { "name": "apply", "label": "Apply Set-point" },
                { "name": "close", "label": "Close Valve" }
            ]
        },
        ...
    },
    ...
}

The configuration above creates a form like this (bottom part of the panel):

Items

Base Image

• type: image
• attributes (defaults):

{
    "href": null,
    "x": null, "y": null, "height": null, "width": null
}

Tips

• For width and height, using the same aspect ratio as the image file will prevent stretching.
• Use the Grid item below to see the coordinates for item placement.
• Adjust x and y (and possibly width and height) to place the base image for a convenient alignment.

Grid

• type: grid
• draws coordinate grids. Useful when placing elements on base image.

• Tips: change type: grid to _type: grid to disable the grid once item placement is completed.

Example: minimal Base Image and Grid

{
    "view_box": "0 -10 1600 700",
    "items": [
        {
            "type": "image",
            "attr": { "x": 50, "y": -2, "width": 1003, "height": 553, "href": "ATDS.png" }
        },
        {"type": "grid"},
    ]
}

• Here the image file size is 1003x553. The width and height attributes are set to match the image dimension. Changing these values scales the image.
• The x and y attributes are adjusted to align the image component nicely on the grid.
• The global view_box defines the overall coordinate, in (xmin, ymin, xmax, ymax). Non-zero min values are often useful to adjust the margin.

Shape Items

• Boxes, circles, etc., can be placed on the canvas, typically on a base image.
• Shape items without metric binding create static shapes.
• Shape items with metric binding will have:
  • dynamic fill colors based on data values.
  • “data labels” showing the value, with format indicated in "metric": {"format": ...}

Attributes common among Shape Items and the default values are:

{
    "x": null, "y": null, "height": null, "width": null,
    "label": null,
    "stroke": this.style.strokeColor,
    "fill": "none",
    "data-dx": null, "data-dy": null,
    "label-dx": null, "label-dy": null,
    "data-color": this.style.dataColor,
    "data-font-family": this.style.dataFontFamily,
    "data-font-weight": this.style.dataFontWeight,
    "data-font-size": this.style.dataFontSize,
    "data-dominant-baseline": undefined,
    "data-text-anchor": undefined,
    "label-font-family": this.style.labelFontFamily,
    "label-font-weight": this.style.labelFontWeight,
    "label-font-size": this.style.labelFontSize,
    "label-dominant-baseline": "central",
    "label-text-anchor": "middle",
}

Box Shape

• type: box

mandatory attributes and default values are:

{ "x": null, "y": null, "width": 30, "height": 30 }

Circle Shape

• type: circle

Mandatory attributes and default values are:

{ "x": null, "y": null, "width": 30, "height": 30 }

Valve Shape

• type: valve

Mandatory attributes and default values are:

{ "x": null, "y": null, "width": 30, "height": 30, "orientation": "horizontal" }

Solenoid Shape

• type: solenoid

Mandatory attributes and default values are:

{ "x": null, "y": null, "width": 50, "height": 30, "fill": "none", "stroke-width": 3, "turns": 12 }

Invisible Shape

• type: invisible

• no shape will be drawn; only data values
• The x and y attributes are still necessary to draw the data labels.

Mandatory attributes and default values are:

{ "x": null, "y": null }

Text

• type: text

• Text with static attributes only creates a static text label.
• Text with "action": {"open": URL} creates a hyperlink.
• Text with metric shows only the data values. (the text attribute will have no effect.)

Mandatory attributes and default values are:

{
    "x": null, "y": null, "text": "",
    "font-family": this.style.fontFamily,
    "font-weight": this.style.fontWeight,
    "font-size": this.style.fontSize,
    "fill": this.style.strokeColor,
    "data-color": this.style.dataColor
}

Button

• Type: plot

• Typically used with action.

Mandatory attributes and default values are:

{
    "x": null, "y": null, "width": 120, "height": 30,
    "rx": 5, "ry": 5,
    "label": "",
}        

Embedded Plot

• Type: plot / micro_plot

• Use metric to assign a channel.

Mandatory attributes and default values for a plot are:

{
    "x": 0, "y": 0, "width": 100, "height": 100, "zoom": 0.8,
    "length": 3600, "dateFormat": null, "label": null,
    "ticksX": 5, "ticksY": 2, "grid": true,
    "min": null, "max": null, "logY": false,
    "marginTop": 0,
    "data-color": this.style.dataColor,
    "fill-opacity": 0, "fill-baseline": 1e-100,
    "timerange-margin-percent": 3,
}

micro_plot is a small box showing a data history plot without axis labels. This is basically the same as plot, with some different default values:

{
     "width": 50, "height": 30, "zoom": 0.2,
     "marker-opacity": 0, "fill-opacity": 0.3,
     "ticksX": 0, "ticksY": 0, 
     "marginTop": 0, "marginBotton": 0, "marginLeft": 0, "marginRight": 0,
     "label": ""
    "timerange-margin-percent": 0,
}

Map

• Map is a schematic representation of a graph of (x,y).
• The graph value of x is used for index of elements, and y is used for color.
• Element shapes are described in a user configuration file.

User Map File

File Format

• JSON file, containing a list of shape elements. Shapes are SVG drawable elements.
• The index fields define binding to the x values of the data object (graph or histogram).

Example 1:

{
  "width": 1.0,
  "height": 1.0,
  "items": [
    {"index":1200,"shape":"circle","attr":{"cx":0.370000,"cy":0.822000,"r":0.015}},
    {"index":1201,"shape":"circle","attr":{"cx":0.403000,"cy":0.814000,"r":0.015}},
    {"index":1202,"shape":"circle","attr":{"cx":0.367000,"cy":0.780000,"r":0.015}},
    {"index":1203,"shape":"circle","attr":{"cx":0.400000,"cy":0.783000,"r":0.015}},
    ...
  ]
}

Example 2:

{
    "width": 1.000, 
    "height": 1.000,
    "items": [
        {
            "index": 0, 
            "shape": "path", 
            "attr": {
                "d": "M0.500,0.500 L0.580,0.500 A0.080,0.080 0 0,0 0.500,0.420 z"
            }
        }, 
        {
            "index": 1, 
            "shape": "path", 
            "attr": {
                "d": "M0.500,0.500 L0.500,0.420 A0.080,0.080 0 0,0 0.420,0.500 z"
            }
        }, 
    ...
  ]
}

Creator Tool

• For simple cases where shapes are only circles, system/server/slowdash-xy2map.py can be used to create a JSON map file from a CSV of index, x, y.

index,x,y
24,0.485,0.915
25,0.461,0.915
26,0.449,0.915
...

$ slowdash-xy2map.py NAME.csv > map-NAME.json

• [TODO] This utility will be further improved. Currently hard-coded values are:
  • width and height are both 1.0.
  • radius is 0.01.
• [TODO] with the --svg option a SVG image file will be also created, which is convenient to test the map file.

Table

Tree

Blob

• Primarily intended for image data, but can be used for many others.
• Data must have a MIME type and URL.

Implementation

• For mime type of image/*, <img src="...">
• For others, <iframe src="...">

HTML / Form

• Displays a HTML page described in an user HTML file stored under the user configuration directory.
• The user configuration file can contain a <form> to send commands to the server-side user script.
• When the form is submitted, a function in the user script (dispatcher) is called with the form data as a JSON object (see the User Module section).

• [TODO] If the Current property is set, the panel contents are displayed only when the display time range includes “now”.

Implementation

• div.innerHTML = ... with parameter substitutions.

Restrictions

• User HTML cannot contain JavaScript. To use the full feature of HTML and JavaScript, consider using the External Page panel.

User HTML File

Example:

<h3>Crate Power Control</h3>
Temperature: <span sd-value="ch1->last()->format('%.1f degC')">---</span>
<p>  
<form>
  <input type="hidden" name="form" value="power_control">
  <div style="margin:10px;border:thin solid;padding:10px;width:30em">
    <label><input type="checkbox" name="crate1">Crate 1</label><br>
    <label><input type="checkbox" name="crate2">Crate 2</label><br>
    <label><input type="checkbox" name="crate3">Crate 3</label><br>
  </div>
  <p>
  <select name="action">
    <option value="turn_on">Turn On</option>
    <option value="turn_off">Turn Off</option>
  </select>
  <p>
  <input type="submit" value="Apply" style="font-size:x-large">
</form>

• Either full or partial HTML can be used. CSS in <head> works.
• Use <form> to submit command to the server-side user code.

Data Binding

• <span> and <div> can have a binding to data: use the sd-value=METRIC attribute.
  • Example: <span sd-value="pressure->format('%.3e mbar')">--</span>

• <input> also can have a binding to data, but the values are updated at the initial loading and after every user operation.
  • Example: <input type="number" name="threshold" sd-value="threshold">

• <input> can be enabled/disabled based on data values: use the sd-enabled=METRIC attribute.
  • Here the value of the METRIC must be a boolean.
  • Example: <input type="submit" name="start" value="Start" sd-enabled="RnuInfo['Status']->match('Idle')">

• For the expressions that can be used in sd-value and sd-enabled, see the Data Transform section.

External Page

• Maybe useful for Web-Cam etc.
• [TODO] If the Current property is set, the page is displayed only when the display time range includes “now”.
• [TODO] Parameter substitution in URL

Implementation

• <iframe src="...">

Restrictions

• For external sites, some operations are prohibited due to the same-origin security policy, including:
  • auto scaling (auto fit to panel size etc.)
  • display offset
  • mouse click detection (for Autocruise etc.)

External User Page with Slow-Dash data and controls

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