I am trying to modify the Minimum, Maximum, Average analysis to subtract the Min from the Max and store the result as a new variable. I stripped out the average calculation because I don’t need it. I also commented out adding the min and max variables to the device using .sendData because I don’t need those either. It seems like it should be a simple const declaration and formula but I keep getting errors:. Here’s the code I’m using:
const { Analysis, Device, Utils } = require(“@tago-io/sdk”);
// The function myAnalysis will run when you execute your analysis
async function myAnalysis(context) {
// reads the values from the environment and saves it in the variable env_vars
const env_vars = Utils.envToJson(context.environment);
if (!env_vars.device_token) {
return context.log("Device token not found on environment parameters");
}
const device = new Device({ token: env_vars.device_token });
// This is a filter to get the minimum value of the variable temperature in the last day
const minFilter = {
variable: "count",
query: "min",
start\_date: "1 day",
};
// Now we use the filter for the device to get the data
// check if the variable min has any value
// if so, we crete a new object to send to TagoIO
const [min] = await device.getData(minFilter);
// if (min) {
// const minValue = {
// variable: “count_minimum”,
// value: min.value,
// unit: “in”,
// };
// Now we send the new object with the minimum value
// await device
// .sendData(minValue)
// .then(context.log(“Count Minimum Updated”));
// } else {
// context.log(“Minimum value not found”);
// }
// This is a filter to get the maximum value of the variable temperature in the last day
const maxFilter = {
variable: "count",
query: "max",
start\_date: "1 day",
};
const [max] = await device.getData(maxFilter);
// if (max) {
// const maxValue = {
// variable: “count_maximum”,
// value: max.value,
// unit: “in”,
// };
// await device
// .sendData(maxValue)
// .then(context.log(“Count Maximum Updated”));
// } else {
// context.log(“Maximum value not found”);
// }
const daily = max.value - min.value;
await device.sendData({variable:“Daily Total”,value:daily.value,})
.then(console.log)
.catch(console.log);
}
module.exports = new Analysis(myAnalysis);
Here’s the error:
Error on object parse: {‘variable’:[{‘message’:‘Invalid variable name’,‘path’:[‘variable’]}]}
EDIT: Changing the .sendData command to the following solved the problem:
await device.sendData({variable:“Daily_Total”,value:daily,})