Great. If you have gridlines: { count: 3 } for the hAxis, you might want
to remove that to get a few more. Looks like 7 would be more appropriate.
It should automatically determine that if you leave off the explicit count
option, or set it to -1.
On Wed, Feb 3, 2016 at 3:03 PM, Souma L <[email protected]> wrote:
> Dear Daniel,
>
> I found it! Actually my first value in the matrix is a numeric but put as
> string between brackets "". So I have just removed them and specify that
> they are float and it works!!!!!
>
> I am so so happy!!! here is a picture of the result :)
>
> [image: Inline image 1]
>
> On Wed, Feb 3, 2016 at 3:53 PM, 'Daniel LaLiberte' via Google
> Visualization API <[email protected]> wrote:
>
>> You say:
>>
>> "In fact, to draw this chart I followed this document where datatable
>> is a matrix where the first coloum must be a string:
>> https://developers.google.com/chart/interactive/docs/points#fullhtml";
>>
>> I don't see what you are talking about in that document. In any event,
>> in order to get log scale, you have to have numbers, not strings. So
>> arrange that your json has numbers for the first column and it should work
>> out better for you.
>>
>> On Wed, Feb 3, 2016 at 9:33 AM, Souma L <[email protected]>
>> wrote:
>>
>>> Dear Daniel,
>>>
>>> Thank you for the cleanning. I am sorry if you find many mistakes.
>>>
>>> In fact, to draw this chart I followed this document where datatable is
>>> a matrix where the first coloum must be a string:
>>> https://developers.google.com/chart/interactive/docs/points#fullhtml
>>>
>>> However,before using ajax and json (for the dropdown event), I put my
>>> data in a php function and then I call it back in my web page and I can get
>>> both axis in logscale. Unfortunatly, it doesn't work using json format.
>>> here is the output.
>>>
>>> Thank you
>>>
>>>
>>> [image: Inline image 1]
>>>
>>>
>>>
>>> On Wed, Feb 3, 2016 at 3:02 PM, 'Daniel LaLiberte' via Google
>>> Visualization API <[email protected]> wrote:
>>>
>>>> There are several errors in that jsfiddle, but most are irrelevant the
>>>> problem with the log scale. The reason you are not seeing log scale is
>>>> your first column (number 0) of data is strings, even though they are
>>>> strings with numbers in them.
>>>>
>>>> The other problems involve your multiple loading of jsapi, together
>>>> with the www.gstatic.com/charts/loader.js. Use one or the other, but
>>>> not both. I cleaned it up for you here:
>>>> https://jsfiddle.net/ug3ogx0v/1/
>>>>
>>>>
>>>> On Wed, Feb 3, 2016 at 8:20 AM, Souma L <[email protected]>
>>>> wrote:
>>>>
>>>>> Dear Daniel
>>>>>
>>>>> Thank you for your help and I read all the instructions to draw the
>>>>> chart. I added some missing links on the <head>.
>>>>>
>>>>> Please find in this jsfiddle link all my code. the chart appears when
>>>>> you click on 'refresh' button. Unfortunatlly, only on jsfiddle my chart
>>>>> doesn't change when I change X or Y parameters (but in my local project it
>>>>> works perfectlly).
>>>>>
>>>>> So, my question is how to put log scale on hAxis?
>>>>>
>>>>> https://jsfiddle.net/Souma/ug3ogx0v/
>>>>>
>>>>>
>>>>> Thank you very much!!
>>>>>
>>>>> On Tue, Feb 2, 2016 at 5:57 PM, 'Daniel LaLiberte' via Google
>>>>> Visualization API <[email protected]> wrote:
>>>>>
>>>>>> Hi Souma,
>>>>>>
>>>>>> The basic instructions on loading charts can be found here:
>>>>>> https://developers.google.com/chart/interactive/docs/basic_load_libs
>>>>>>
>>>>>> If you could point to your actual web page, or create a jsfiddle that
>>>>>> we can see, that will help us be able to point out particular problems
>>>>>> and
>>>>>> suggest more fixes.
>>>>>>
>>>>>> Assuming you get the chart to display (which it sounds like you did
>>>>>> at least once), we still can't see what your data is from your code, but
>>>>>> I
>>>>>> suspect your hAxis data is not actually numbers, but either string or one
>>>>>> of the date/time types. So check on that.
>>>>>>
>>>>>> On Tue, Feb 2, 2016 at 11:37 AM, Souma L <[email protected]>
>>>>>> wrote:
>>>>>>
>>>>>>> Thank you for your help. I read some pages about
>>>>>>> 'google.setOnLoadCallback' but I didn't get how I can correct my errors.
>>>>>>>
>>>>>>> I was wondering if you could explain to me in my code because I am
>>>>>>> a begginner in this world but I am spending a long time to learn.
>>>>>>>
>>>>>>> Thnak you in advance,
>>>>>>>
>>>>>>> On Tue, Feb 2, 2016 at 4:58 PM, 'Sergey Grabkovsky' via Google
>>>>>>> Visualization API <[email protected]> wrote:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> There are numerous issues with your code, and none of them have to
>>>>>>>> do with fact that you're doing log scale.
>>>>>>>>
>>>>>>>> Your first issue is that you're using google.setOnLoadCallback
>>>>>>>> wrong. You must pass it a function reference, but you are passing it
>>>>>>>> the
>>>>>>>> result of a function call (in this case, the value 'undefined', since
>>>>>>>> drawChart doesn't return anything).
>>>>>>>>
>>>>>>>> Another thing you're doing wrong is calling
>>>>>>>> google.setOnLoadCallback after the page loads (as evidenced by the fact
>>>>>>>> that you're using $.ready). google.setOnLoadCallback won't work if
>>>>>>>> your page has already loaded. This issue has been fixed with our new
>>>>>>>> loader
>>>>>>>> (google.charts.load).
>>>>>>>>
>>>>>>>> On Tue, Feb 2, 2016 at 10:46 AM SL <[email protected]>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Hello,
>>>>>>>>>
>>>>>>>>> I am trying to set a log scale in both hAxis and vAxis when I
>>>>>>>>> refresh the page (through AJAX).
>>>>>>>>>
>>>>>>>>> I specify 'logScale = 'True' in options but it works for vAxis and
>>>>>>>>> not for h Axis. All my data are positive without date.
>>>>>>>>>
>>>>>>>>> Here is my code if someone could help me:
>>>>>>>>>
>>>>>>>>> Thanks!
>>>>>>>>> ------------------------------------------------
>>>>>>>>> function drawChart(dataIn) {
>>>>>>>>>
>>>>>>>>> var data =
>>>>>>>>> google.visualization.arrayToDataTable(dataIn);
>>>>>>>>>
>>>>>>>>> var options = {
>>>>>>>>> legend: 'yes',
>>>>>>>>> pointSize: 10,
>>>>>>>>> hAxis: {
>>>>>>>>> logScale:true,
>>>>>>>>> scaleType:'log',
>>>>>>>>> gridlines: { count: 10 },
>>>>>>>>> title: varX2.options[varX2.selectedIndex].text
>>>>>>>>>
>>>>>>>>> },
>>>>>>>>> vAxis:{
>>>>>>>>> logScale: true,
>>>>>>>>> title: varY2.options[varY2.selectedIndex].text
>>>>>>>>> },
>>>>>>>>> series: {
>>>>>>>>> 0: { pointShape: 'circle' },
>>>>>>>>> 1: { pointShape: 'triangle' },
>>>>>>>>> 2: { pointShape: 'square' },
>>>>>>>>> 3: { pointShape: 'diamond' },
>>>>>>>>> 4: { pointShape: 'star' },
>>>>>>>>> 5: { pointShape: 'polygon' }
>>>>>>>>> }
>>>>>>>>>
>>>>>>>>> };
>>>>>>>>>
>>>>>>>>> var chart = new
>>>>>>>>> google.visualization.ScatterChart(document.getElementById('chart_div2'));
>>>>>>>>>
>>>>>>>>> chart.draw(data, options);
>>>>>>>>> }
>>>>>>>>>
>>>>>>>>> $(document).ready(function() {
>>>>>>>>>
>>>>>>>>> $('#button2').click(function() {
>>>>>>>>> $.ajax({
>>>>>>>>> url: 'data_json.php',
>>>>>>>>> type: 'POST',
>>>>>>>>> data:{varX2:$('#varX2').val(),
>>>>>>>>> varY2:$('#varY2').val() },
>>>>>>>>> success: function(json) {
>>>>>>>>> json = JSON.parse( json );
>>>>>>>>>
>>>>>>>>> console.log( json );
>>>>>>>>> google.setOnLoadCallback(drawChart(json));
>>>>>>>>> }
>>>>>>>>> });
>>>>>>>>> });
>>>>>>>>> });
>>>>>>>>>
>>>>>>>>> ------------------------------------------------
>>>>>>>>>
>>>>>>>>> --
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>>>>>>>>> To view this discussion on the web visit
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>>>>>>>>> .
>>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>> *[image: unnamed.gif]• Sergey Grabkovsky• Software Engineer•
>>>>>>>> Google, Inc• [email protected] <[email protected]>*
>>>>>>>>
>>>>>>>> --
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>>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Daniel LaLiberte
>>>>>> <https://plus.google.com/100631381223468223275?prsrc=2>
>>>>>> [email protected] <[email protected]> 5CC, Cambridge MA
>>>>>>
>>>>>> --
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>>>>>> For more options, visit https://groups.google.com/d/optout.
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>>>>>
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>>>>
>>>>
>>>>
>>>> --
>>>> Daniel LaLiberte
>>>> <https://plus.google.com/100631381223468223275?prsrc=2>
>>>> [email protected] <[email protected]> 5CC, Cambridge MA
>>>>
>>>> --
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>>>
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>>
>>
>>
>> --
>> Daniel LaLiberte <https://plus.google.com/100631381223468223275?prsrc=2>
>> [email protected] <[email protected]> 5CC, Cambridge MA
>>
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