This chart type displays a single number in a large font, representing the current value of a single metric on a plot line.
If the time period is in the past, the number represents the value of the metric near the end of the time period.

resource "signalform_single_value_chart" "mysvchart0" {
name = "CPU Total Idle - Single Value"
program_text = <<-EOF
myfilters = filter("cluster_name", "prod") and filter("role", "search")
data("cpu.total.idle", filter=myfilters).publish()
EOF
description = "Very cool Single Value Chart"
color_by = "Dimension"
max_delay = 2
refresh_interval = 1
max_precision = 2
is_timestamp_hidden = true
show_spark_line = true
}
The following arguments are supported in the resource block:
name - (Required) Name of the chart.program_text - (Required) Signalflow program text for the chart. More info at https://developers.signalfx.com/docs/signalflow-overview.description - (Optional) Description of the chart.color_by - (Optional) Must be "Dimension" or "Metric". "Dimension" by default.color_scale - (Optional. color_by must be "Scale") Single color range including both the color to display for that range and the borders of the range. Example: [{ gt : 60, color : blue }, { lte : 60, color : yellow }]. Look at this link.
gt - (Optional) Indicates the lower threshold non-inclusive value for this range.gte - (Optional) Indicates the lower threshold inclusive value for this range.lt - (Optional) Indicates the upper threshold non-inculsive value for this range.lte - (Optional) Indicates the upper threshold inclusive value for this range.color - (Required) The color range to use. Must be either gray, blue, navy, orange, yellow, magenta, purple, violet, lilac, green, aquamarine. 
unit_prefix - (Optional) Must be "Metric" or "Binary". "Metric" by default.refresh_interval - (Optional) How often (in seconds) to refresh the value.max_precision - (Optional) The maximum precision to for value displayed.is_timestamp_hidden - (Optional) Whether to hide the timestamp in the chart. false by default.show_spark_line - (Optional) Whether to show a trend line below the current value. false by default.synced - (Optional) Whether the resource in SignalForm and SignalFx are identical or not. Used internally for syncing, you do not need to specify it. Whenever you see a change to this field in the plan, it means that your resource has been changed from the UI and Terraform is now going to re-sync it back to what is in your configuration.