To fix the issue with the blank line at the end of the file, replace this
line from the csvToDataTable function:
rawData.push(row);
with this:
if (i === 0 || row.length === rawData[0].length) {
rawData.push(row);
}
That will add the row of data only if it contains a number of elements
equal to the number of elements in the header row, which ensures that you
don't add any rows that are malformed due to a wrong number of elements
(like having any empty row).
On Friday, August 1, 2014 11:06:28 PM UTC-4, [email protected] wrote:
>
> One other quick question, any idea why the filename:
>
> Current - Log.csv doesnt work yet
> Current- Log.csv does?
>
> Another bummer of the software that makes the csv is that the filename is
> hard coded to "Log - Current.csv"
> Strange that 1 space works but 2 doesnt. any thoughts?
>
>
>
> On Friday, August 1, 2014 7:19:46 PM UTC-7, [email protected] wrote:
>>
>> It works!!! YESS!!!! Thank you sooo much!!
>>
>> I spent a couple hours on it last night and it was racking my brain. The
>> test values worked, but my real values with different headings then Temp1
>> Temp2 etc wasnt working. I wasnt sure if it was the names or values or
>> what, then the test values wouldnt work..was killing me! Turned out it
>> was a line return at the end of the csv file! Got rid of that and bam,
>> magical!!!
>>
>> So one quick question then, is there a way to accommodate for that line
>> return? The program that is generating the csv doesnt give me the option.
>> This is too cool, thank you thank you!
>>
>> On Thursday, July 31, 2014 9:05:13 PM UTC-7, Andrew Gallant wrote:
>>>
>>> Oops, sorry, my mistake. You need to add the csvToDataTable function I
>>> posted above to the javascript (just paste it in before the drawChart
>>> function).
>>>
>>> On Thursday, July 31, 2014 5:38:29 PM UTC-4, [email protected] wrote:
>>>>
>>>> There is Uncaught ReferenceError: csvToDataTable is not defined
>>>>
>>>> btw I set the path to the following: its in the root directory along
>>>> with mychart.html
>>>>
>>>> url: '/current.csv'
>>>> ,
>>>>
>>>>
>>>> On Thursday, July 31, 2014 5:57:50 AM UTC-7, Andrew Gallant wrote:
>>>>>
>>>>> Open the page in Chrome and open the developer's console
>>>>> (ctrl+shift+j). Are there any error messages?
>>>>>
>>>>> On Thursday, July 31, 2014 12:44:54 AM UTC-4, [email protected]
>>>>> wrote:
>>>>>>
>>>>>> Andrew, wow, thanks again, Im dying to see this working! I changed
>>>>>> the path per your instructions but cant seem to get the page to render
>>>>>> properly. I have it in the root dir of my web server but if I open a
>>>>>> browser and point to that file it comes up as a white page. If I view
>>>>>> the
>>>>>> source I see it exactly as the page is saved, its like it didnt execute
>>>>>> the
>>>>>> html code just loaded the page. Does that make sense? If I point to my
>>>>>> index.html file that works fine.
>>>>>> Im using IIS on Windows 7 to serve the page. Anything special I need
>>>>>> to turn on?
>>>>>>
>>>>>>
>>>>>> On Monday, July 28, 2014 4:48:17 PM UTC-7, Andrew Gallant wrote:
>>>>>>>
>>>>>>> Storing the CSV file inside your web directory makes this much
>>>>>>> easier, as this allows you to use AJAX to fetch the data directly
>>>>>>> instead
>>>>>>> of writing some server-sude code to get the CSV. The jQuery library
>>>>>>> provides a handy shortcut for writing AJAX:
>>>>>>>
>>>>>>> $.ajax({
>>>>>>> url: '/path/to/data.csv', // this is the path in your web
>>>>>>> directory, not your system directory
>>>>>>> dataType: 'text',
>>>>>>> success: function (csv) {
>>>>>>> // code to draw chart
>>>>>>> }
>>>>>>> });
>>>>>>>
>>>>>>> I attached an HTML file that ties all of this together.
>>>>>>>
>>>>>>> On Sunday, July 27, 2014 2:01:35 PM UTC-4, [email protected] wrote:
>>>>>>>>
>>>>>>>> Wow, thank you so much Andrew. I would have never figured that
>>>>>>>> parsing out...
>>>>>>>>
>>>>>>>> Either one of those examples to turn stuff on or off would work.
>>>>>>>> The site is going to be only accessed by me so it doesnt have to be
>>>>>>>> super
>>>>>>>> sexy.
>>>>>>>>
>>>>>>>> The csv file is hosted on the machine that is running the
>>>>>>>> webserver. I can store its location anywhere including the root dir
>>>>>>>> of the
>>>>>>>> website. Hopefully that makes it a bit easier.
>>>>>>>> Thanks again for all your help on this!
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sunday, July 27, 2014 6:23:30 AM UTC-7, Andrew Gallant wrote:
>>>>>>>>>
>>>>>>>>> For turning on and off the lines, would either of these work for
>>>>>>>>> you?
>>>>>>>>>
>>>>>>>>> http://jsfiddle.net/asgallant/WaUu2/
>>>>>>>>> http://jsfiddle.net/asgallant/6gz2Q/
>>>>>>>>>
>>>>>>>>> If you can't change the format of the CSV, then you'll have to
>>>>>>>>> manually parse it, but your structure is simple enough that this
>>>>>>>>> shouldn't
>>>>>>>>> present a problem. Once it is loaded in the browser, this should
>>>>>>>>> suffice
>>>>>>>>> to transform it into a DataTable for the charts:
>>>>>>>>>
>>>>>>>>> function csvToDataTable (csv) {
>>>>>>>>> // split the csv on line breaks
>>>>>>>>> var csvRows = csv.split(/\r{0,1}\n/g);
>>>>>>>>> var rawData = [], row, match, year, month, day, hours,
>>>>>>>>> minutes, seconds;
>>>>>>>>> for (var i = 0; i < csvRows.length; i++) {
>>>>>>>>> row = csvRows[i].split(',');
>>>>>>>>> if (i != 0) {
>>>>>>>>> // assumes dates are in the format "MM/dd/yyyy
>>>>>>>>> HH:mm:ss"
>>>>>>>>> match = row[0].match(/(\d{2})\/(\d{2})\/(\d{4})
>>>>>>>>> (\d{2}):(\d{2}):(\d{2})/);
>>>>>>>>> year = parseInt(match[3], 10);
>>>>>>>>> month = parseInt(match[1], 10) - 1; // convert to
>>>>>>>>> javascript's zero-indexed months
>>>>>>>>> day = parseInt(match[2], 10);
>>>>>>>>> hours = parseInt(match[4], 10);
>>>>>>>>> minutes = parseInt(match[5], 10);
>>>>>>>>> seconds = parseInt(match[6], 10);
>>>>>>>>> row[0] = new Date(year, month, day, hours, minutes,
>>>>>>>>> seconds);
>>>>>>>>> for (var j = 1; j < row.length; j++) {
>>>>>>>>> // convert the strings to numbers
>>>>>>>>> // change to parseFloat if your numbers can be
>>>>>>>>> floats
>>>>>>>>> row[j] = parseInt(row[j]);
>>>>>>>>> }
>>>>>>>>> }
>>>>>>>>> rawData.push(row);
>>>>>>>>> }
>>>>>>>>> return google.visualization.arrayToDataTable(rawData);
>>>>>>>>> }
>>>>>>>>>
>>>>>>>>> Loading the data might be a bit tricky; is this going to be hosted
>>>>>>>>> on your local PC or on a website? Do you have the choice of where
>>>>>>>>> the CSV
>>>>>>>>> gets stored?
>>>>>>>>>
>>>>>>>>> On Saturday, July 26, 2014 2:40:51 PM UTC-4, [email protected]
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>> Well Im certainly willing to try. I've looked a bunch of
>>>>>>>>>> examples but just cant seem to get my data loaded,at least if I
>>>>>>>>>> include the
>>>>>>>>>> date field. I manually put a ' ' around date and that worked except
>>>>>>>>>> I have
>>>>>>>>>> no control over the format of the csv to actually include those ' '
>>>>>>>>>>
>>>>>>>>>> But sure, lets give this a shot.
>>>>>>>>>>
>>>>>>>>>> By turning off / isolate values I have 10 temperatures, I'd like
>>>>>>>>>> to be able to display just one or two of them or all 10. Having 10
>>>>>>>>>> lines
>>>>>>>>>> gets a bit messy, plus this might grow to more in the future.
>>>>>>>>>>
>>>>>>>>>> Both of those zooms are brilliant. I was checking out the google
>>>>>>>>>> example when I was researching this the last couple weeks, thats
>>>>>>>>>> exactly
>>>>>>>>>> what I was envisioning.
>>>>>>>>>>
>>>>>>>>>> Thanks for offering to help out!
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Friday, July 25, 2014 6:36:49 PM UTC-7, Andrew Gallant wrote:
>>>>>>>>>>>
>>>>>>>>>>> This is probably easy to do, and if you're feeling adventurous,
>>>>>>>>>>> we can help you save a bit of cash and do this yourself.
>>>>>>>>>>>
>>>>>>>>>>> A few key questions:'
>>>>>>>>>>>
>>>>>>>>>>> What do you mean by "turn off / isolate certain values"?
>>>>>>>>>>>
>>>>>>>>>>> Would something like this
>>>>>>>>>>> <https://developers.google.com/chart/interactive/docs/gallery/controls#chartrangefilter>
>>>>>>>>>>> or
>>>>>>>>>>> this <http://jsfiddle.net/asgallant/fgM4V/> work for you to
>>>>>>>>>>> zoom your data?
>>>>>>>>>>>
>>>>>>>>>>> On Friday, July 25, 2014 2:26:08 PM UTC-4, [email protected]
>>>>>>>>>>> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> I have a few bucks to pay someone to write a fairly basic chart
>>>>>>>>>>>> for me. I have a csv file on the local machine that will be
>>>>>>>>>>>> serving the
>>>>>>>>>>>> chart web page. The file is updated every few minutes recording
>>>>>>>>>>>> temperature values and a time stamp. All the chart needs to do is
>>>>>>>>>>>> load the
>>>>>>>>>>>> data and display it. I would like the ability to turn off /
>>>>>>>>>>>> isolate
>>>>>>>>>>>> certain values and also zoom into a section of the chart.
>>>>>>>>>>>> Every couple months the data is reset so the max is going to be
>>>>>>>>>>>> 3 months of data. Here is what the .csv looks like.
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Time,Temp1,Temp2,Temp3,Temp4,Temp5,Temp6,Temp7,Temp8,Temp9,Temp10
>>>>>>>>>>>> 03/03/2014 00:26:37,52,77,79,66,63,66,86,72,66,57
>>>>>>>>>>>> 03/03/2014 00:27:37,52,78,80,66,63,66,87,72,67,57
>>>>>>>>>>>> 03/03/2014 00:28:38,52,79,84,67,64,69,86,72,68,52
>>>>>>>>>>>> 03/03/2014 00:29:39,52,77,88,68,66,76,83,72,68,51
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
--
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